Bug fixes, logging, options for how to handle illegal characters

Optional illegal character replacement and more error handling/logging

Documentation/Advanced.md

@@ -27,7 +27,7 @@ To make upgrades and reinstalls easier, Libation separates all of its responsibi
 
 ### Linux and Mac
 
-Although Libation only currently officially supports Windows, some users have had success with WINE. ([Linux](https://github.com/rmcrackan/Libation/issues/28#issuecomment-890594158), [OSX Crossover and WINE](https://github.com/rmcrackan/Libation/issues/150#issuecomment-1004918592))
+Although Libation only currently officially supports Windows, some users have had success with WINE. ([Linux](https://github.com/rmcrackan/Libation/issues/28#issuecomment-890594158), [OSX Crossover and WINE](https://github.com/rmcrackan/Libation/issues/150#issuecomment-1004918592), [Linux and WINE](https://github.com/rmcrackan/Libation/issues/28#issuecomment-1161111014))
 
 ### Settings
 

README.md

@@ -66,4 +66,4 @@
 
 Disclaimer: I've made every good-faith effort to include nothing insecure, malicious, anti-privacy, or destructive. That said: use at your own risk.
 
-I made this for myself and I want to share it with the great programming and audible/audiobook communiites which have been so generous with their time and help.
+I made this for myself and I want to share it with the great programming and audible/audiobook communities which have been so generous with their time and help.

Source/AaxDecrypter/AaxDecrypter.csproj

@@ -5,8 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AAXClean" Version="0.4.7" />
-    <PackageReference Include="AAXClean.Codecs" Version="0.2.7" />
+    <PackageReference Include="AAXClean.Codecs" Version="0.2.10" />
   </ItemGroup>
 
   <ItemGroup>

Source/AaxDecrypter/AaxcDownloadConvertBase.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Threading.Tasks;
 using AAXClean;
 using Dinah.Core.Net.Http;
 
@@ -10,8 +11,8 @@ namespace AaxDecrypter
 
 		protected AaxFile AaxFile;
 
-		protected AaxcDownloadConvertBase(string outFileName, string cacheDirectory, DownloadOptions dlLic)
-			: base(outFileName, cacheDirectory, dlLic) { }
+		protected AaxcDownloadConvertBase(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outFileName, cacheDirectory, dlOptions) { }
 
 		/// <summary>Setting cover art by this method will insert the art into the audiobook metadata</summary>
 		public override void SetCoverArt(byte[] coverArt)
@@ -109,10 +110,11 @@ namespace AaxDecrypter
 				});
 		}
 
-		public override void Cancel()
+		public override async Task CancelAsync()
 		{
 			IsCanceled = true;
-			AaxFile?.Cancel();
+			if (AaxFile != null)
+				await AaxFile.CancelAsync();
 			AaxFile?.Dispose();
 			CloseInputFileStream();
 		}

Source/AaxDecrypter/AaxcDownloadMultiConverter.cs

@@ -2,38 +2,68 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 using AAXClean;
 using AAXClean.Codecs;
-using Dinah.Core.StepRunner;
 using FileManager;
 
 namespace AaxDecrypter
 {
 	public class AaxcDownloadMultiConverter : AaxcDownloadConvertBase
 	{
-		protected override StepSequence Steps { get; }
-
-        private Func<MultiConvertFileProperties, string> multipartFileNameCallback { get; }
-
-        private static TimeSpan minChapterLength { get; } = TimeSpan.FromSeconds(3);
+		private static TimeSpan minChapterLength { get; } = TimeSpan.FromSeconds(3);
 		private List<string> multiPartFilePaths { get; } = new List<string>();
 
-        public AaxcDownloadMultiConverter(string outFileName, string cacheDirectory, DownloadOptions dlLic,
-            Func<MultiConvertFileProperties, string> multipartFileNameCallback = null)
-			: base(outFileName, cacheDirectory, dlLic)
-        {
-            Steps = new StepSequence
-            {
-                Name = "Download and Convert Aaxc To " + DownloadOptions.OutputFormat,
+		public AaxcDownloadMultiConverter(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outFileName, cacheDirectory, dlOptions) { }
 
-                ["Step 1: Get Aaxc Metadata"] = Step_GetMetadata,
-                ["Step 2: Download Decrypted Audiobook"] = Step_DownloadAudiobookAsMultipleFilesPerChapter,
-                ["Step 3: Cleanup"] = Step_Cleanup,
-            };
-            this.multipartFileNameCallback = multipartFileNameCallback ?? MultiConvertFileProperties.DefaultMultipartFilename;
-        }
+		public override async Task<bool> RunAsync()
+		{
+			try
+			{
+				Serilog.Log.Information("Begin download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
 
-        /*
+				//Step 1
+				Serilog.Log.Information("Begin Get Aaxc Metadata");
+				if (await Task.Run(Step_GetMetadata))
+					Serilog.Log.Information("Completed Get Aaxc Metadata");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Get Aaxc Metadata");
+					return false;
+				}
+
+				//Step 2
+				Serilog.Log.Information("Begin Download Decrypted Audiobook");
+				if (await Step_DownloadAudiobookAsMultipleFilesPerChapter())
+					Serilog.Log.Information("Completed Download Decrypted Audiobook");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Download Decrypted Audiobook");
+					return false;
+				}
+
+				//Step 3
+				Serilog.Log.Information("Begin Cleanup");
+				if (await Task.Run(Step_Cleanup))
+					Serilog.Log.Information("Completed Cleanup");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Cleanup");
+					return false;
+				}
+
+				Serilog.Log.Information("Completed download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return true;
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Error(ex, "Error encountered in download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return false;
+			}
+		}
+
+		/*
 https://github.com/rmcrackan/Libation/pull/127#issuecomment-939088489
 
 If the chapter truly is empty, that is, 0 audio frames in length, then yes it is ignored.
@@ -56,86 +86,104 @@ The book will be split into the following files:
 01:41:00 - 02:05:00 | Book - 04 - Chapter 4.m4b
 
 That naming may not be desirable for everyone, but it's an easy change to instead use the last of the combined chapter's title in the file name.
-         */
-        private bool Step_DownloadAudiobookAsMultipleFilesPerChapter()
-        {
-            var zeroProgress = Step_DownloadAudiobook_Start();
+		 */
+		private async Task<bool> Step_DownloadAudiobookAsMultipleFilesPerChapter()
+		{
+			var zeroProgress = Step_DownloadAudiobook_Start();
 
-            var chapters = DownloadOptions.ChapterInfo.Chapters.ToList();
+			var chapters = DownloadOptions.ChapterInfo.Chapters;
 
-            // Ensure split files are at least minChapterLength in duration.
-            var splitChapters = new ChapterInfo(DownloadOptions.ChapterInfo.StartOffset);
+			// Ensure split files are at least minChapterLength in duration.
+			var splitChapters = new ChapterInfo(DownloadOptions.ChapterInfo.StartOffset);
 
-            var runningTotal = TimeSpan.Zero;
-            string title = "";
+			var runningTotal = TimeSpan.Zero;
+			string title = "";
 
-            for (int i = 0; i < chapters.Count; i++)
-            {
-                if (runningTotal == TimeSpan.Zero)
-                    title = chapters[i].Title;
+			for (int i = 0; i < chapters.Count; i++)
+			{
+				if (runningTotal == TimeSpan.Zero)
+					title = chapters[i].Title;
 
-                runningTotal += chapters[i].Duration;
+				runningTotal += chapters[i].Duration;
 
-                if (runningTotal >= minChapterLength)
-                {
-                    splitChapters.AddChapter(title, runningTotal);
-                    runningTotal = TimeSpan.Zero;
-                }
-            }
+				if (runningTotal >= minChapterLength)
+				{
+					splitChapters.AddChapter(title, runningTotal);
+					runningTotal = TimeSpan.Zero;
+				}
+			}
 
-            // reset, just in case
-            multiPartFilePaths.Clear();
+			// reset, just in case
+			multiPartFilePaths.Clear();
 
-            ConversionResult result;
+			ConversionResult result;
 
-            AaxFile.ConversionProgressUpdate += AaxFile_ConversionProgressUpdate;
-            if (DownloadOptions.OutputFormat == OutputFormat.M4b)
-                result = ConvertToMultiMp4a(splitChapters);
-            else
-                result = ConvertToMultiMp3(splitChapters);
-            AaxFile.ConversionProgressUpdate -= AaxFile_ConversionProgressUpdate;
+			AaxFile.ConversionProgressUpdate += AaxFile_ConversionProgressUpdate;
+			if (DownloadOptions.OutputFormat == OutputFormat.M4b)
+				result = await ConvertToMultiMp4a(splitChapters);
+			else
+				result = await ConvertToMultiMp3(splitChapters);
+			AaxFile.ConversionProgressUpdate -= AaxFile_ConversionProgressUpdate;
 
-            Step_DownloadAudiobook_End(zeroProgress);
+			Step_DownloadAudiobook_End(zeroProgress);
 
-            return result == ConversionResult.NoErrorsDetected;
-        }
+			return result == ConversionResult.NoErrorsDetected;
+		}
 
-        private ConversionResult ConvertToMultiMp4a(ChapterInfo splitChapters)
-        {
-            var chapterCount = 0;
-            return AaxFile.ConvertToMultiMp4a(splitChapters, newSplitCallback =>
-                createOutputFileStream(++chapterCount, splitChapters, newSplitCallback),
-            DownloadOptions.TrimOutputToChapterLength);
-        }
+		private Task<ConversionResult> ConvertToMultiMp4a(ChapterInfo splitChapters)
+		{
+			var chapterCount = 0;
+			return AaxFile.ConvertToMultiMp4aAsync
+				(
+					splitChapters,
+					newSplitCallback => Callback(++chapterCount, splitChapters, newSplitCallback),
+					DownloadOptions.TrimOutputToChapterLength
+				);
+		}
 
-        private ConversionResult ConvertToMultiMp3(ChapterInfo splitChapters)
-        {
-            var chapterCount = 0;
-            return AaxFile.ConvertToMultiMp3(splitChapters, newSplitCallback =>
-            {
-                createOutputFileStream(++chapterCount, splitChapters, newSplitCallback);
-                ((NAudio.Lame.LameConfig)newSplitCallback.UserState).ID3.Track = chapterCount.ToString();
-            }, DownloadOptions.LameConfig, DownloadOptions.TrimOutputToChapterLength);
-        }
+		private Task<ConversionResult> ConvertToMultiMp3(ChapterInfo splitChapters)
+		{
+			var chapterCount = 0;
+			return AaxFile.ConvertToMultiMp3Async
+				(
+					splitChapters,
+					newSplitCallback => Callback(++chapterCount, splitChapters, newSplitCallback),
+					DownloadOptions.LameConfig,
+					DownloadOptions.TrimOutputToChapterLength
+				);
+		}
 
-        private void createOutputFileStream(int currentChapter, ChapterInfo splitChapters, NewSplitCallback newSplitCallback)
-        {
-            var fileName = multipartFileNameCallback(new()
-            {
-                OutputFileName = OutputFileName,
-                PartsPosition = currentChapter,
-                PartsTotal = splitChapters.Count,
-                Title = newSplitCallback?.Chapter?.Title
-            });
-            fileName = FileUtility.GetValidFilename(fileName);
 
-            multiPartFilePaths.Add(fileName);
+		private void Callback(int currentChapter, ChapterInfo splitChapters, NewMP3SplitCallback newSplitCallback)
+			=> Callback(currentChapter, splitChapters, newSplitCallback);
 
-            FileUtility.SaferDelete(fileName);
+		private void Callback(int currentChapter, ChapterInfo splitChapters, NewSplitCallback newSplitCallback)
+		{
+			MultiConvertFileProperties props = new()
+			{
+				OutputFileName = OutputFileName,
+				PartsPosition = currentChapter,
+				PartsTotal = splitChapters.Count,
+				Title = newSplitCallback?.Chapter?.Title,
+			};
+			newSplitCallback.OutputFile = createOutputFileStream(props);
+			newSplitCallback.TrackTitle = DownloadOptions.GetMultipartTitleName(props);
+			newSplitCallback.TrackNumber = currentChapter;
+			newSplitCallback.TrackCount = splitChapters.Count;
+		}
 
-            newSplitCallback.OutputFile = File.Open(fileName, FileMode.OpenOrCreate);
+		private FileStream createOutputFileStream(MultiConvertFileProperties multiConvertFileProperties)
+		{
+			var fileName = DownloadOptions.GetMultipartFileName(multiConvertFileProperties);
+			fileName = FileUtility.GetValidFilename(fileName, DownloadOptions.ReplacementCharacters);
 
-            OnFileCreated(fileName);
-        }
-    }
+			multiPartFilePaths.Add(fileName);
+
+			FileUtility.SaferDelete(fileName);
+
+			var file = File.Open(fileName, FileMode.OpenOrCreate);
+			OnFileCreated(fileName);
+			return file;
+		}
+	}
 }

Source/AaxDecrypter/AaxcDownloadSingleConverter.cs

@@ -1,55 +1,98 @@
 using System;
 using System.IO;
+using System.Threading.Tasks;
 using AAXClean;
 using AAXClean.Codecs;
-using Dinah.Core.StepRunner;
 using FileManager;
 
 namespace AaxDecrypter
 {
 	public class AaxcDownloadSingleConverter : AaxcDownloadConvertBase
 	{
-		protected override StepSequence Steps { get; }
+		public AaxcDownloadSingleConverter(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outFileName, cacheDirectory, dlOptions) { }
 
-        public AaxcDownloadSingleConverter(string outFileName, string cacheDirectory, DownloadOptions dlLic)
-			: base(outFileName, cacheDirectory, dlLic)
-        {
-            Steps = new StepSequence
-            {
-                Name = "Download and Convert Aaxc To " + DownloadOptions.OutputFormat,
+		public override async Task<bool> RunAsync()
+		{
+			try
+			{
+				Serilog.Log.Information("Begin download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
 
-                ["Step 1: Get Aaxc Metadata"] = Step_GetMetadata,
-                ["Step 2: Download Decrypted Audiobook"] = Step_DownloadAudiobookAsSingleFile,
-                ["Step 3: Create Cue"] = Step_CreateCue,
-                ["Step 4: Cleanup"] = Step_Cleanup,
-            };
-        }
+				//Step 1
+				Serilog.Log.Information("Begin Step 1: Get Aaxc Metadata");
+				if (await Task.Run(Step_GetMetadata))
+					Serilog.Log.Information("Completed Step 1: Get Aaxc Metadata");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 1: Get Aaxc Metadata");
+					return false;
+				}
 
-        private bool Step_DownloadAudiobookAsSingleFile()
-        {
-            var zeroProgress = Step_DownloadAudiobook_Start();
+				//Step 2
+				Serilog.Log.Information("Begin Step 2: Download Decrypted Audiobook");
+				if (await Step_DownloadAudiobookAsSingleFile())
+					Serilog.Log.Information("Completed Step 2: Download Decrypted Audiobook");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 2: Download Decrypted Audiobook");
+					return false;
+				}
 
-            FileUtility.SaferDelete(OutputFileName);
+				//Step 3
+				Serilog.Log.Information("Begin Step 3: Create Cue");
+				if (await Task.Run(Step_CreateCue))
+					Serilog.Log.Information("Completed Step 3: Create Cue");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 3: Create Cue");
+					return false;
+				}
 
-            var outputFile = File.Open(OutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
-            OnFileCreated(OutputFileName);
+				//Step 4
+				Serilog.Log.Information("Begin Step 4: Cleanup");
+				if (await Task.Run(Step_Cleanup))
+					Serilog.Log.Information("Completed Step 4: Cleanup");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 4: Cleanup");
+					return false;
+				}
 
-            AaxFile.ConversionProgressUpdate += AaxFile_ConversionProgressUpdate;
-            var decryptionResult
-                = DownloadOptions.OutputFormat == OutputFormat.M4b
-                ? AaxFile.ConvertToMp4a(outputFile, DownloadOptions.ChapterInfo, DownloadOptions.TrimOutputToChapterLength)
-                : AaxFile.ConvertToMp3(outputFile, DownloadOptions.LameConfig, DownloadOptions.ChapterInfo, DownloadOptions.TrimOutputToChapterLength);
-            AaxFile.ConversionProgressUpdate -= AaxFile_ConversionProgressUpdate;
+				Serilog.Log.Information("Completed download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return true;
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Error(ex, "Error encountered in download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return false;
+			}
+		}
 
-            DownloadOptions.ChapterInfo = AaxFile.Chapters;
+		private async Task<bool> Step_DownloadAudiobookAsSingleFile()
+		{
+			var zeroProgress = Step_DownloadAudiobook_Start();
 
-            Step_DownloadAudiobook_End(zeroProgress);
+			FileUtility.SaferDelete(OutputFileName);
 
-            var success = decryptionResult == ConversionResult.NoErrorsDetected && !IsCanceled;
-            if (success)
-                base.OnFileCreated(OutputFileName);
+			var outputFile = File.Open(OutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
+			OnFileCreated(OutputFileName);
 
-            return success;
-        }
-    }
+			AaxFile.ConversionProgressUpdate += AaxFile_ConversionProgressUpdate;
+			var decryptionResult
+				= DownloadOptions.OutputFormat == OutputFormat.M4b
+				? await AaxFile.ConvertToMp4aAsync(outputFile, DownloadOptions.ChapterInfo, DownloadOptions.TrimOutputToChapterLength)
+				: await AaxFile.ConvertToMp3Async(outputFile, DownloadOptions.LameConfig, DownloadOptions.ChapterInfo, DownloadOptions.TrimOutputToChapterLength);
+			AaxFile.ConversionProgressUpdate -= AaxFile_ConversionProgressUpdate;
+
+			DownloadOptions.ChapterInfo = AaxFile.Chapters;
+
+			Step_DownloadAudiobook_End(zeroProgress);
+
+			var success = decryptionResult == ConversionResult.NoErrorsDetected && !IsCanceled;
+			if (success)
+				base.OnFileCreated(OutputFileName);
+
+			return success;
+		}
+	}
 }

Source/AaxDecrypter/AudiobookDownloadBase.cs

@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading.Tasks;
 using Dinah.Core;
 using Dinah.Core.Net.Http;
-using Dinah.Core.StepRunner;
 using FileManager;
 
 namespace AaxDecrypter
@@ -21,41 +21,40 @@ namespace AaxDecrypter
 		public event EventHandler<string> FileCreated;
 
 		public bool IsCanceled { get; set; }
-		
+		public string TempFilePath { get; }
+
 		protected string OutputFileName { get; private set; }
-		protected DownloadOptions DownloadOptions { get; }
+		protected IDownloadOptions DownloadOptions { get; }
 		protected NetworkFileStream InputFileStream => (nfsPersister ??= OpenNetworkFileStream()).NetworkFileStream;
 
 		// Don't give the property a 'set'. This should have to be an obvious choice; not accidental
 		protected void SetOutputFileName(string newOutputFileName) => OutputFileName = newOutputFileName;
 
-		protected abstract StepSequence Steps { get; }
 		private NetworkFileStreamPersister nfsPersister;
 
 		private string jsonDownloadState { get; }
-		public string TempFilePath { get; }
 
-		protected AudiobookDownloadBase(string outFileName, string cacheDirectory, DownloadOptions dlLic)
+		protected AudiobookDownloadBase(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
 		{
 			OutputFileName = ArgumentValidator.EnsureNotNullOrWhiteSpace(outFileName, nameof(outFileName));
 
 			var outDir = Path.GetDirectoryName(OutputFileName);
 			if (!Directory.Exists(outDir))
-				throw new DirectoryNotFoundException($"Directory does not exist: {nameof(outDir)}");
+				Directory.CreateDirectory(outDir);
 
 			if (!Directory.Exists(cacheDirectory))
-				throw new DirectoryNotFoundException($"Directory does not exist: {nameof(cacheDirectory)}");
+				Directory.CreateDirectory(cacheDirectory);
 
 			jsonDownloadState = Path.Combine(cacheDirectory, Path.GetFileName(Path.ChangeExtension(OutputFileName, ".json")));
 			TempFilePath = Path.ChangeExtension(jsonDownloadState, ".aaxc");
 
-			DownloadOptions = ArgumentValidator.EnsureNotNull(dlLic, nameof(dlLic));
+			DownloadOptions = ArgumentValidator.EnsureNotNull(dlOptions, nameof(dlOptions));
 
 			// delete file after validation is complete
 			FileUtility.SaferDelete(OutputFileName);
-		}
+		}		
 
-		public abstract void Cancel();
+		public abstract Task CancelAsync();
 
 		public virtual void SetCoverArt(byte[] coverArt)
 		{
@@ -63,15 +62,7 @@ namespace AaxDecrypter
 				OnRetrievedCoverArt(coverArt);
 		}
 
-		public bool Run()
-		{
-			var (IsSuccess, Elapsed) = Steps.Run();
-
-			if (!IsSuccess)
-				Serilog.Log.Logger.Error("Conversion failed");
-
-			return IsSuccess;
-		}
+		public abstract Task<bool> RunAsync();
 
 		protected void OnRetrievedTitle(string title)
 			=> RetrievedTitle?.Invoke(this, title);
@@ -79,10 +70,8 @@ namespace AaxDecrypter
 			=> RetrievedAuthors?.Invoke(this, authors);
 		protected void OnRetrievedNarrators(string narrators)
 			=> RetrievedNarrators?.Invoke(this, narrators);
-
 		protected void OnRetrievedCoverArt(byte[] coverArt)
 			=> RetrievedCoverArt?.Invoke(this, coverArt);
-
 		protected void OnDecryptProgressUpdate(DownloadProgress downloadProgress) 
 			=> DecryptProgressUpdate?.Invoke(this, downloadProgress);
 		protected void OnDecryptTimeRemaining(TimeSpan timeRemaining)
@@ -104,7 +93,7 @@ namespace AaxDecrypter
 			try
 			{
 				var path = Path.ChangeExtension(OutputFileName, ".cue");
-				path = FileUtility.GetValidFilename(path);
+				path = FileUtility.GetValidFilename(path, DownloadOptions.ReplacementCharacters);
 				File.WriteAllText(path, Cue.CreateContents(Path.GetFileName(OutputFileName), DownloadOptions.ChapterInfo));
 				OnFileCreated(path);
 			}

Source/AaxDecrypter/DownloadOptions.cs

@@ -1,30 +0,0 @@
-using AAXClean;
-using Dinah.Core;
-
-namespace AaxDecrypter
-{
-    public class DownloadOptions
-    {
-        public string DownloadUrl { get; }
-        public string UserAgent { get; }
-        public string AudibleKey { get; init; }
-        public string AudibleIV { get; init; }
-        public OutputFormat OutputFormat { get; init; }
-        public bool TrimOutputToChapterLength { get; init; }
-        public bool RetainEncryptedFile { get; init; }
-        public bool StripUnabridged { get; init; }
-        public bool CreateCueSheet { get; init; }
-        public ChapterInfo ChapterInfo { get; set; }
-        public NAudio.Lame.LameConfig LameConfig { get; set; }
-        public bool Downsample { get; set; }
-        public bool MatchSourceBitrate { get; set; }       
-
-        public DownloadOptions(string downloadUrl, string userAgent)
-        {
-            DownloadUrl = ArgumentValidator.EnsureNotNullOrEmpty(downloadUrl, nameof(downloadUrl));
-            UserAgent = ArgumentValidator.EnsureNotNullOrEmpty(userAgent, nameof(userAgent));
-
-            // no null/empty check for key/iv. unencrypted files do not have them
-        }
-    }
-}

Source/AaxDecrypter/IDownloadOptions.cs

@@ -0,0 +1,24 @@
+using AAXClean;
+
+namespace AaxDecrypter
+{
+    public interface IDownloadOptions
+	{
+        FileManager.ReplacementCharacters ReplacementCharacters { get; }
+        string DownloadUrl { get; }
+        string UserAgent { get; }
+        string AudibleKey { get; }
+        string AudibleIV { get; }
+        OutputFormat OutputFormat { get; }
+        bool TrimOutputToChapterLength { get; }
+        bool RetainEncryptedFile { get; }
+        bool StripUnabridged { get; }
+        bool CreateCueSheet { get; }
+        ChapterInfo ChapterInfo { get; set; }
+        NAudio.Lame.LameConfig LameConfig { get; set; }
+        bool Downsample { get; set; }
+        bool MatchSourceBitrate { get; set; }
+        string GetMultipartFileName(MultiConvertFileProperties props);
+        string GetMultipartTitleName(MultiConvertFileProperties props);
+    }    
+}

Source/AaxDecrypter/MultiConvertFileProperties.cs

@@ -11,15 +11,5 @@ namespace AaxDecrypter
         public int PartsTotal { get; set; }
         public string Title { get; set; }
 
-        public static string DefaultMultipartFilename(MultiConvertFileProperties multiConvertFileProperties)
-        {
-            var template = Path.ChangeExtension(multiConvertFileProperties.OutputFileName, null) + " - <ch# 0> - <title>" + Path.GetExtension(multiConvertFileProperties.OutputFileName);
-
-            var fileNamingTemplate = new FileNamingTemplate(template) { IllegalCharacterReplacements = " " };
-            fileNamingTemplate.AddParameterReplacement("ch# 0", FileUtility.GetSequenceFormatted(multiConvertFileProperties.PartsPosition, multiConvertFileProperties.PartsTotal));
-            fileNamingTemplate.AddParameterReplacement("title", multiConvertFileProperties.Title ?? "");
-
-            return fileNamingTemplate.GetFilePath();
-        }
     }
 }

Source/AaxDecrypter/NetworkFileStream.cs

@@ -145,7 +145,14 @@ namespace AaxDecrypter
 		private void Update()
 		{
 			RequestHeaders = HttpRequest.Headers;
-			Updated?.Invoke(this, EventArgs.Empty);
+			try
+			{
+				Updated?.Invoke(this, EventArgs.Empty);
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Error(ex, "An error was encountered while saving the download progress to JSON");
+			}
 		}
 
 		/// <summary>
@@ -211,7 +218,7 @@ namespace AaxDecrypter
 		}
 
 		/// <summary>
-		/// Downlod <see cref="Uri"/> to <see cref="SaveFilePath"/>.
+		/// Download <see cref="Uri"/> to <see cref="SaveFilePath"/>.
 		/// </summary>
 		private void DownloadFile()
 		{
@@ -245,9 +252,6 @@ namespace AaxDecrypter
 				WritePosition = downloadPosition;
 				Update();
 
-				downloadedPiece.Set();
-				downloadEnded.Set();
-
 				if (!IsCancelled && WritePosition < ContentLength)
 					throw new WebException($"Downloaded size (0x{WritePosition:X10}) is less than {nameof(ContentLength)} (0x{ContentLength:X10}).");
 
@@ -257,7 +261,11 @@ namespace AaxDecrypter
 			catch (Exception ex)
 			{
 				Serilog.Log.Error(ex, "An error was encountered while downloading {Uri}", Uri);
-				IsCancelled = true;
+			}
+			finally
+			{
+				downloadedPiece.Set();
+				downloadEnded.Set();
 			}
 		}
 
@@ -401,7 +409,7 @@ namespace AaxDecrypter
 		{
 			if (!hasBegunDownloading)
 				BeginDownloading();
-
+			
 			var toRead = Math.Min(count, Length - Position);
 			WaitToPosition(Position + toRead);
 			return _readFile.Read(buffer, offset, count);
@@ -426,14 +434,20 @@ namespace AaxDecrypter
 		/// <param name="requiredPosition">The minimum required flished data length in <see cref="SaveFilePath"/>.</param>
 		private void WaitToPosition(long requiredPosition)
 		{
-			while (requiredPosition > WritePosition && !IsCancelled && hasBegunDownloading && !downloadedPiece.WaitOne(1000)) ;
+			while (WritePosition < requiredPosition
+				&& hasBegunDownloading
+				&& !IsCancelled
+				&& !downloadEnded.WaitOne(0))
+			{
+				downloadedPiece.WaitOne(100);
+			}
 		}
 
 		public override void Close()
 		{
 			IsCancelled = true;
 
-			while (downloadEnded is not null && !downloadEnded.WaitOne(1000)) ;
+			while (downloadEnded is not null && !downloadEnded.WaitOne(100)) ;
 
 			_readFile.Close();
 			_writeFile.Close();

Source/AaxDecrypter/UnencryptedAudiobookDownloader.cs

@@ -1,33 +1,69 @@
 using System;
 using System.Threading;
+using System.Threading.Tasks;
 using Dinah.Core.Net.Http;
-using Dinah.Core.StepRunner;
 using FileManager;
 
 namespace AaxDecrypter
 {
 	public class UnencryptedAudiobookDownloader : AudiobookDownloadBase
 	{
-		protected override StepSequence Steps { get; }
 
-		public UnencryptedAudiobookDownloader(string outFileName, string cacheDirectory, DownloadOptions dlLic)
-			: base(outFileName, cacheDirectory, dlLic)
+		public UnencryptedAudiobookDownloader(string outFileName, string cacheDirectory, IDownloadOptions dlLic)
+			: base(outFileName, cacheDirectory, dlLic) { }
+
+		public override async Task<bool> RunAsync()
 		{
-			Steps = new StepSequence
+			try
 			{
-				Name = "Download Mp3 Audiobook",
+				Serilog.Log.Information("Begin download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
 
-				["Step 1: Get Mp3 Metadata"] = Step_GetMetadata,
-				["Step 2: Download Audiobook"] = Step_DownloadAudiobookAsSingleFile,
-				["Step 3: Create Cue"] = Step_CreateCue,
-				["Step 4: Cleanup"] = Step_Cleanup,
-			};
+				//Step 1
+				Serilog.Log.Information("Begin Step 1: Get Mp3 Metadata");
+				if (await Task.Run(Step_GetMetadata))
+					Serilog.Log.Information("Completed Step 1: Get Mp3 Metadata");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 1: Get Mp3 Metadata");
+					return false;
+				}
+
+				//Step 2
+				Serilog.Log.Information("Begin Step 2: Download Audiobook");
+				if (await Task.Run(Step_DownloadAudiobookAsSingleFile))
+					Serilog.Log.Information("Completed Step 2: Download Audiobook");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 2: Download Audiobook");
+					return false;
+				}
+
+				//Step 3
+				Serilog.Log.Information("Begin Step 3: Cleanup");
+				if (await Task.Run(Step_Cleanup))
+					Serilog.Log.Information("Completed Step 3: Cleanup");
+				else
+				{
+					Serilog.Log.Information("Failed to Complete Step 3: Cleanup");
+					return false;
+				}
+
+				Serilog.Log.Information("Completed download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return true;
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Error(ex, "Error encountered in download and convert Aaxc To {format}", DownloadOptions.OutputFormat);
+				return false;
+			}
 		}
 
-		public override void Cancel()
+
+		public override Task CancelAsync()
 		{
 			IsCanceled = true;
 			CloseInputFileStream();
+			return Task.CompletedTask;
 		}
 
 		protected bool Step_GetMetadata()
@@ -65,8 +101,8 @@ namespace AaxDecrypter
 			}
 
 			CloseInputFileStream();
-
-			var realOutputFileName = FileUtility.SaferMoveToValidPath(InputFileStream.SaveFilePath, OutputFileName);
+			
+			var realOutputFileName = FileUtility.SaferMoveToValidPath(InputFileStream.SaveFilePath, OutputFileName, DownloadOptions.ReplacementCharacters);
 			SetOutputFileName(realOutputFileName);
 			OnFileCreated(realOutputFileName);
 

Source/AppScaffolding/AppScaffolding.csproj

@@ -3,7 +3,7 @@
 
   <PropertyGroup>
     <TargetFramework>net6.0-windows</TargetFramework>
-    <Version>8.0.2.1</Version>
+    <Version>8.1.2.1</Version>
   </PropertyGroup>
 
   <ItemGroup>

Source/AppScaffolding/LibationScaffolding.cs

@@ -117,6 +117,9 @@ namespace AppScaffolding
 			if (!config.Exists(nameof(config.DownloadEpisodes)))
 				config.DownloadEpisodes = true;
 
+			if (!config.Exists(nameof(config.ReplacementCharacters)))
+				config.ReplacementCharacters = FileManager.ReplacementCharacters.Default;
+
 			if (!config.Exists(nameof(config.FolderTemplate)))
 				config.FolderTemplate = Templates.Folder.DefaultTemplate;
 
@@ -126,6 +129,9 @@ namespace AppScaffolding
 			if (!config.Exists(nameof(config.ChapterFileTemplate)))
 				config.ChapterFileTemplate = Templates.ChapterFile.DefaultTemplate;
 
+			if (!config.Exists(nameof(config.ChapterTitleTemplate)))
+				config.ChapterTitleTemplate = Templates.ChapterTitle.DefaultTemplate;
+
 			if (!config.Exists(nameof(config.AutoScan)))
 				config.AutoScan = true;
 
@@ -467,7 +473,7 @@ namespace AppScaffolding
 			}
 			catch (Exception ex)
 			{
-				Serilog.Log.Logger.Error(ex, "An error occured while running database migrations in {0}", nameof(migrate_from_7_10_1));
+				Serilog.Log.Logger.Error(ex, "An error occurred while running database migrations in {0}", nameof(migrate_from_7_10_1));
 				config.SetObject($"{nameof(migrate_from_7_10_1)}_ThrewError", true);
 			}
 		}

Source/ApplicationServices/LibraryCommands.cs

@@ -128,13 +128,13 @@ namespace ApplicationServices
 
 
 				Log.Logger.Information("Begin scan for orphaned episode parents");
-				var newParents = await findAndAddMissingParents(apiExtendedfunc, accounts);
+				var newParents = await findAndAddMissingParents(accounts);
 				Log.Logger.Information($"Orphan episode scan complete. New parents count {newParents}");
 
 				if (newParents >= 0)
 				{
 					//If any episodes are still orphaned, their series have been
-					//removed from the catalog and wel'll never be able to find them.
+					//removed from the catalog and we'll never be able to find them.
 
 					//only do this if findAndAddMissingParents returned >= 0. If it
 					//returned < 0, an error happened and there's still a chance that
@@ -251,11 +251,11 @@ namespace ApplicationServices
 			}
 			catch (Exception ex)
 			{
-				Serilog.Log.Logger.Error(ex, "An error occured while trying to remove orphaned episodes from the database");
+				Serilog.Log.Logger.Error(ex, "An error occurred while trying to remove orphaned episodes from the database");
 			}
 		}
 
-		static async Task<int> findAndAddMissingParents(Func<Account, Task<ApiExtended>> apiExtendedfunc, Account[] accounts)
+		static async Task<int> findAndAddMissingParents(Account[] accounts)
 		{
 			using var context = DbContexts.GetContext();
 
@@ -274,11 +274,11 @@ namespace ApplicationServices
 					.DistinctBy(s => s.Series.AudibleSeriesId)
 					.ToList();
 
-				// We're only calling the Catalog endpoint, so it doesn't matter which account we use.
-				var apiExtended = await apiExtendedfunc(accounts[0]);
+				// The Catalog endpoint does not require authentication.
+				var api = new ApiUnauthenticated(accounts[0].Locale);
 
 				var seriesParents = orphanedSeries.Select(o => o.Series.AudibleSeriesId).ToList();
-				var items = await apiExtended.Api.GetCatalogProductsAsync(seriesParents, CatalogOptions.ResponseGroupOptions.ALL_OPTIONS);
+				var items = await api.GetCatalogProductsAsync(seriesParents, CatalogOptions.ResponseGroupOptions.ALL_OPTIONS);
 
 				List<ImportItem> newParentsImportItems = new();
 				foreach (var sp in orphanedSeries)
@@ -308,7 +308,7 @@ namespace ApplicationServices
 			}
 			catch (Exception ex)
 			{
-				Serilog.Log.Logger.Error(ex, "An error occured while trying to scan for orphaned episode parents.");
+				Serilog.Log.Logger.Error(ex, "An error occurred while trying to scan for orphaned episode parents.");
 				return -1;
 			}
 		}
@@ -321,7 +321,7 @@ namespace ApplicationServices
 			}
 			catch (Microsoft.EntityFrameworkCore.DbUpdateException ex)
 			{
-				// DbUpdateException exceptions can wreck serilog. Condense it until we can find a better solution. I suspect the culpret is the "WithExceptionDetails" serilog extension
+				// DbUpdateException exceptions can wreck serilog. Condense it until we can find a better solution. I suspect the culprit is the "WithExceptionDetails" serilog extension
 
 				static string format(Exception ex) => $"\r\nMessage: {ex.Message}\r\nStack Trace:\r\n{ex.StackTrace}";
 

Source/AudibleUtilities/ApiExtended.cs

@@ -137,7 +137,7 @@ namespace AudibleUtilities
 					//Get child episodes asynchronously and await all at the end
 					getChildEpisodesTasks.Add(getChildEpisodesAsync(concurrencySemaphore, item));
 				}
-				else if (!item.IsEpisodes)
+				else if (!item.IsEpisodes && !item.IsSeriesParent)
 					items.Add(item);
 
 				count++;
@@ -145,7 +145,7 @@ namespace AudibleUtilities
 
 			Serilog.Log.Logger.Debug("Library scan complete. Found {count} books and series. Waiting on {getChildEpisodesTasksCount} series episode scans to complete.", count, getChildEpisodesTasks.Count);
 
-			//await and add all episides from all parents
+			//await and add all episodes from all parents
 			foreach (var epList in await Task.WhenAll(getChildEpisodesTasks))
 				items.AddRange(epList);
 

Source/AudibleUtilities/AudibleUtilities.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AudibleApi" Version="4.0.0.1" />
+    <PackageReference Include="AudibleApi" Version="4.2.2.1" />
   </ItemGroup>
 
   <ItemGroup>

Source/DataLayer/DataLayer.csproj

@@ -12,7 +12,7 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <PackageReference Include="Dinah.EntityFrameworkCore" Version="4.1.0.1" />
+    <PackageReference Include="Dinah.EntityFrameworkCore" Version="4.1.1.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.6">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

Source/DtoImporterService/BookImporter.cs

@@ -101,7 +101,8 @@ namespace DtoImporterService
 			// absence of categories is also possible
 
 			// CATEGORY HACK: only use the 1st 2 categories
-			// (real impl: var lastCategory = item.Categories.LastOrDefault()?.CategoryId ?? "";)
+			// after we support full arbitrary-depth category trees and multiple categories per book, the real impl will be something like this
+			//   var lastCategory = item.Categories.LastOrDefault()?.CategoryId ?? "";
 			var lastCategory
 				= item.Categories.Length == 0 ? ""
 				: item.Categories.Length == 1 ? item.Categories[0].CategoryId

Source/FileLiberator/AudioDecodable.cs

@@ -1,4 +1,7 @@
-using System;
+using LibationFileManager;
+using NAudio.Lame;
+using System;
+using System.Threading.Tasks;
 
 namespace FileLiberator
 {
@@ -10,8 +13,32 @@ namespace FileLiberator
         public event EventHandler<string> AuthorsDiscovered;
         public event EventHandler<string> NarratorsDiscovered;
         public event EventHandler<byte[]> CoverImageDiscovered;
-        public abstract void Cancel();
+        public abstract Task CancelAsync();
 
+        protected LameConfig GetLameOptions(Configuration config)
+        {
+            LameConfig lameConfig = new();
+            lameConfig.Mode = MPEGMode.Mono;
+
+            if (config.LameTargetBitrate)
+            {
+                if (config.LameConstantBitrate)
+                    lameConfig.BitRate = config.LameBitrate;
+                else
+                {
+                    lameConfig.ABRRateKbps = config.LameBitrate;
+                    lameConfig.VBR = VBRMode.ABR;
+                    lameConfig.WriteVBRTag = true;
+                }
+            }
+            else
+            {
+                lameConfig.VBR = VBRMode.Default;
+                lameConfig.VBRQuality = config.LameVBRQuality;
+                lameConfig.WriteVBRTag = true;
+            }
+            return lameConfig;
+        }
         protected void OnTitleDiscovered(string title) => OnTitleDiscovered(null, title);
         protected void OnTitleDiscovered(object _, string title)
 		{

Source/FileLiberator/AudioFileStorageExt.cs

@@ -8,19 +8,6 @@ namespace FileLiberator
 {
 	public static class AudioFileStorageExt
 	{
-		private class MultipartRenamer
-		{
-			private LibraryBook libraryBook { get; }
-
-			internal MultipartRenamer(LibraryBook libraryBook) => this.libraryBook = libraryBook;
-
-			internal string MultipartFilename(AaxDecrypter.MultiConvertFileProperties props)
-				=> Templates.ChapterFile.GetFilename(libraryBook.ToDto(), props);
-		}
-
-		public static Func<AaxDecrypter.MultiConvertFileProperties, string> CreateMultipartRenamerFunc(this AudioFileStorage _, LibraryBook libraryBook)
-			=> new MultipartRenamer(libraryBook).MultipartFilename;
-
 		/// <summary>
 		/// DownloadDecryptBook:
 		/// File path for where to move files into.

Source/FileLiberator/ConvertToMp3.cs

@@ -1,10 +1,10 @@
 using System;
 using System.IO;
+using System.Linq;
 using System.Threading.Tasks;
 using AAXClean;
 using AAXClean.Codecs;
 using DataLayer;
-using Dinah.Core;
 using Dinah.Core.ErrorHandling;
 using Dinah.Core.Net.Http;
 using FileManager;
@@ -12,90 +12,93 @@ using LibationFileManager;
 
 namespace FileLiberator
 {
-    public class ConvertToMp3 : AudioDecodable
-    {
-        public override string Name => "Convert to Mp3";
-        private Mp4File m4bBook;
+	public class ConvertToMp3 : AudioDecodable
+	{
+		public override string Name => "Convert to Mp3";
+		private Mp4File m4bBook;
 
-        private long fileSize;
-        private static string Mp3FileName(string m4bPath) => Path.ChangeExtension(m4bPath ?? "", ".mp3");
+		private long fileSize;
+		private static string Mp3FileName(string m4bPath) => Path.ChangeExtension(m4bPath ?? "", ".mp3");
 
-        private bool cancelled = false;
-        public override void Cancel()
-        {            
-            m4bBook?.Cancel();
-            cancelled = true;
-        }
+		public override Task CancelAsync() => m4bBook?.CancelAsync() ?? Task.CompletedTask;
 
-        public static bool ValidateMp3(LibraryBook libraryBook)
+		public static bool ValidateMp3(LibraryBook libraryBook)
 		{
-            var path = AudibleFileStorage.Audio.GetPath(libraryBook.Book.AudibleProductId);
-            return path?.ToLower()?.EndsWith(".m4b") == true && !File.Exists(Mp3FileName(path));
-        }
+			var paths = AudibleFileStorage.Audio.GetPaths(libraryBook.Book.AudibleProductId);
+			return paths.Any(path => path?.ToString()?.ToLower()?.EndsWith(".m4b") == true && !File.Exists(Mp3FileName(path)));
+		}
 
-        public override bool Validate(LibraryBook libraryBook) => ValidateMp3(libraryBook);
+		public override bool Validate(LibraryBook libraryBook) => ValidateMp3(libraryBook);
 
-        public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
-        {
-            OnBegin(libraryBook);
+		public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
+		{
+			OnBegin(libraryBook);
 
-            OnStreamingBegin($"Begin converting {libraryBook} to mp3");
+			try
+			{
+				var m4bPaths = AudibleFileStorage.Audio.GetPaths(libraryBook.Book.AudibleProductId);
 
-            try
-            {
-                var m4bPath = AudibleFileStorage.Audio.GetPath(libraryBook.Book.AudibleProductId);
-                m4bBook = new Mp4File(m4bPath, FileAccess.Read);
-                m4bBook.ConversionProgressUpdate += M4bBook_ConversionProgressUpdate;
+				foreach (var m4bPath in m4bPaths)
+				{
+					var proposedMp3Path = Mp3FileName(m4bPath);
+					if (File.Exists(proposedMp3Path) || !File.Exists(m4bPath)) continue;
 
-                fileSize = m4bBook.InputStream.Length;
+					m4bBook = await Task.Run(() => new Mp4File(m4bPath, FileAccess.Read));
+					m4bBook.ConversionProgressUpdate += M4bBook_ConversionProgressUpdate;
 
-                OnTitleDiscovered(m4bBook.AppleTags.Title);
-                OnAuthorsDiscovered(m4bBook.AppleTags.FirstAuthor);
-                OnNarratorsDiscovered(m4bBook.AppleTags.Narrator);
-                OnCoverImageDiscovered(m4bBook.AppleTags.Cover);
+					fileSize = m4bBook.InputStream.Length;
 
-                using var mp3File = File.OpenWrite(Path.GetTempFileName());
+					OnTitleDiscovered(m4bBook.AppleTags.Title);
+					OnAuthorsDiscovered(m4bBook.AppleTags.FirstAuthor);
+					OnNarratorsDiscovered(m4bBook.AppleTags.Narrator);
+					OnCoverImageDiscovered(m4bBook.AppleTags.Cover);
 
-                var result = await Task.Run(() => m4bBook.ConvertToMp3(mp3File));
-                m4bBook.InputStream.Close();
-                mp3File.Close();
+					using var mp3File = File.OpenWrite(Path.GetTempFileName());
+					var lameConfig = GetLameOptions(Configuration.Instance);
+					var result = await m4bBook.ConvertToMp3Async(mp3File, lameConfig);
+					m4bBook.InputStream.Close();
+					mp3File.Close();
 
-                var proposedMp3Path = Mp3FileName(m4bPath);
-                var realMp3Path = FileUtility.SaferMoveToValidPath(mp3File.Name, proposedMp3Path);
-                OnFileCreated(libraryBook, realMp3Path);
+					if (result == ConversionResult.Failed)
+					{
+						FileUtility.SaferDelete(mp3File.Name);
+						return new StatusHandler { "Conversion failed" };
+					}
+					else if (result == ConversionResult.Cancelled)
+					{
+						FileUtility.SaferDelete(mp3File.Name);
+						return new StatusHandler { "Cancelled" };
+					}
 
-                if (result == ConversionResult.Failed)
-                    return new StatusHandler { "Conversion failed" };
-                else if (result == ConversionResult.Cancelled)
-                    return new StatusHandler { "Cancelled" };
-                else
-                    return new StatusHandler();
-            }
-            finally
-            {
-                OnStreamingCompleted($"Completed converting to mp3: {libraryBook.Book.Title}");
-                OnCompleted(libraryBook);
-            }
-        }
+					var realMp3Path = FileUtility.SaferMoveToValidPath(mp3File.Name, proposedMp3Path, Configuration.Instance.ReplacementCharacters);
+					OnFileCreated(libraryBook, realMp3Path);
+				}
+				return new StatusHandler();
+			}
+			finally
+			{
+				OnCompleted(libraryBook);
+			}
+		}
 
-        private void M4bBook_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
-        {
-            var duration = m4bBook.Duration;
-            var remainingSecsToProcess = (duration - e.ProcessPosition).TotalSeconds;
-            var estTimeRemaining = remainingSecsToProcess / e.ProcessSpeed;
+		private void M4bBook_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
+		{
+			var duration = m4bBook.Duration;
+			var remainingSecsToProcess = (duration - e.ProcessPosition).TotalSeconds;
+			var estTimeRemaining = remainingSecsToProcess / e.ProcessSpeed;
 
-            if (double.IsNormal(estTimeRemaining))
-                OnStreamingTimeRemaining(TimeSpan.FromSeconds(estTimeRemaining));
+			if (double.IsNormal(estTimeRemaining))
+				OnStreamingTimeRemaining(TimeSpan.FromSeconds(estTimeRemaining));
 
-            double progressPercent = 100 * e.ProcessPosition.TotalSeconds / duration.TotalSeconds;
+			double progressPercent = 100 * e.ProcessPosition.TotalSeconds / duration.TotalSeconds;
 
-            OnStreamingProgressChanged(
-                new DownloadProgress
-                {
-                    ProgressPercentage = progressPercent,
-                    BytesReceived = (long)(fileSize * progressPercent),
-                    TotalBytesToReceive = fileSize
-                });
-        }
-    }
+			OnStreamingProgressChanged(
+				new DownloadProgress
+				{
+					ProgressPercentage = progressPercent,
+					BytesReceived = (long)(fileSize * progressPercent),
+					TotalBytesToReceive = fileSize
+				});
+		}
+	}
 }

Source/FileLiberator/DownloadDecryptBook.cs

@@ -14,251 +14,254 @@ using LibationFileManager;
 
 namespace FileLiberator
 {
-    public class DownloadDecryptBook : AudioDecodable
-    {
-        public override string Name => "Download & Decrypt";
-        private AudiobookDownloadBase abDownloader;
+	public class DownloadDecryptBook : AudioDecodable
+	{
+		public override string Name => "Download & Decrypt";
+		private AudiobookDownloadBase abDownloader;
 
-        public override bool Validate(LibraryBook libraryBook) => !libraryBook.Book.Audio_Exists();
+		public override bool Validate(LibraryBook libraryBook) => !libraryBook.Book.Audio_Exists();
 
-        public override void Cancel() => abDownloader?.Cancel();
+		public override Task CancelAsync() => abDownloader?.CancelAsync() ?? Task.CompletedTask;
 
-        public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
-        {
-            var entries = new List<FilePathCache.CacheEntry>();
-            // these only work so minimally b/c CacheEntry is a record.
-            // in case of parallel decrypts, only capture the ones for this book id.
-            // if user somehow starts multiple decrypts of the same book in parallel: on their own head be it
-            void FilePathCache_Inserted(object sender, FilePathCache.CacheEntry e)
-            {
-                if (e.Id.EqualsInsensitive(libraryBook.Book.AudibleProductId))
-                    entries.Add(e);
-            }
-            void FilePathCache_Removed(object sender, FilePathCache.CacheEntry e)
-            {
-                if (e.Id.EqualsInsensitive(libraryBook.Book.AudibleProductId))
-                    entries.Remove(e);
-            }
-
-            OnBegin(libraryBook);
-
-            try
-            {
-                if (libraryBook.Book.Audio_Exists())
-                    return new StatusHandler { "Cannot find decrypt. Final audio file already exists" };
-
-                bool success = false;
-                try
-                {
-                    FilePathCache.Inserted += FilePathCache_Inserted;
-                    FilePathCache.Removed += FilePathCache_Removed;
-
-                    success = await downloadAudiobookAsync(libraryBook);
-                }
-                finally
-                {
-                    FilePathCache.Inserted -= FilePathCache_Inserted;
-                    FilePathCache.Removed -= FilePathCache_Removed;
-                }
-
-                // decrypt failed
-                if (!success)
-                {
-                    foreach (var tmpFile in entries.Where(f => f.FileType != FileType.AAXC))
-                        FileUtility.SaferDelete(tmpFile.Path);
-
-                    return abDownloader?.IsCanceled == true ?
-                        new StatusHandler { "Cancelled" } : 
-                        new StatusHandler { "Decrypt failed" };
-                }
-
-                // moves new files from temp dir to final dest.
-                // This could take a few seconds if moving hundreds of files.
-                var movedAudioFile = await Task.Run(() => moveFilesToBooksDir(libraryBook, entries));
-
-                // decrypt failed
-                if (!movedAudioFile)
-                    return new StatusHandler { "Cannot find final audio file after decryption" };
-
-                if (Configuration.Instance.DownloadCoverArt)
-                    DownloadCoverArt(libraryBook);
-
-                libraryBook.Book.UpdateBookStatus(LiberatedStatus.Liberated);
-
-                return new StatusHandler();
-            }
-            finally
-            {
-                OnCompleted(libraryBook);
-            }
-        }
-
-        private async Task<bool> downloadAudiobookAsync(LibraryBook libraryBook)
-        {
-            OnStreamingBegin($"Begin decrypting {libraryBook}");
-
-            try
-            {
-                var config = Configuration.Instance;
-
-                downloadValidation(libraryBook);
-
-                var api = await libraryBook.GetApiAsync();
-                var contentLic = await api.GetDownloadLicenseAsync(libraryBook.Book.AudibleProductId);
-                var audiobookDlLic = BuildDownloadOptions(config, contentLic);
-
-                var outFileName = AudibleFileStorage.Audio.GetInProgressFilename(libraryBook, audiobookDlLic.OutputFormat.ToString().ToLower());
-                var cacheDir = AudibleFileStorage.DownloadsInProgressDirectory;
-
-                if (contentLic.DrmType != AudibleApi.Common.DrmType.Adrm)
-                    abDownloader = new UnencryptedAudiobookDownloader(outFileName, cacheDir, audiobookDlLic);
-                else
-                {
-                    AaxcDownloadConvertBase converter
-                        = config.SplitFilesByChapter ? new AaxcDownloadMultiConverter(
-                            outFileName, cacheDir, audiobookDlLic,
-                            AudibleFileStorage.Audio.CreateMultipartRenamerFunc(libraryBook))
-                        : new AaxcDownloadSingleConverter(outFileName, cacheDir, audiobookDlLic);
-
-                    if (config.AllowLibationFixup)
-                        converter.RetrievedMetadata += (_, tags) => tags.Generes = string.Join(", ", libraryBook.Book.CategoriesNames());
-
-                    abDownloader = converter;
-                }
-
-                abDownloader.DecryptProgressUpdate += OnStreamingProgressChanged;
-                abDownloader.DecryptTimeRemaining += OnStreamingTimeRemaining;
-                abDownloader.RetrievedTitle += OnTitleDiscovered;
-                abDownloader.RetrievedAuthors += OnAuthorsDiscovered;
-                abDownloader.RetrievedNarrators += OnNarratorsDiscovered;
-                abDownloader.RetrievedCoverArt += AaxcDownloader_RetrievedCoverArt;
-                abDownloader.FileCreated += (_, path) => OnFileCreated(libraryBook, path);
-
-                // REAL WORK DONE HERE
-                var success = await Task.Run(abDownloader.Run);
-
-                return success;
-            }
-            finally
-            {
-                OnStreamingCompleted($"Completed downloading and decrypting {libraryBook.Book.Title}");
-            }
-        }
-
-        private static DownloadOptions BuildDownloadOptions(Configuration config, AudibleApi.Common.ContentLicense contentLic)
-        {
-            //I assume if ContentFormat == "MPEG" that the delivered file is an unencrypted mp3.
-            //I also assume that if DrmType != Adrm, the file will be an mp3.
-            //These assumptions may be wrong, and only time and bug reports will tell.
-
-            bool encrypted = contentLic.DrmType == AudibleApi.Common.DrmType.Adrm;
-
-            var outputFormat = !encrypted || (config.AllowLibationFixup && config.DecryptToLossy) ?
-                     OutputFormat.Mp3 : OutputFormat.M4b;
-
-            var audiobookDlLic = new DownloadOptions
-                 (
-                 contentLic?.ContentMetadata?.ContentUrl?.OfflineUrl,
-                 Resources.USER_AGENT
-                 )
-            {
-                AudibleKey = contentLic?.Voucher?.Key,
-                AudibleIV = contentLic?.Voucher?.Iv,
-                OutputFormat = outputFormat,
-                TrimOutputToChapterLength = config.AllowLibationFixup && config.StripAudibleBrandAudio,
-                RetainEncryptedFile = config.RetainAaxFile && encrypted,
-                StripUnabridged = config.AllowLibationFixup && config.StripUnabridged,
-                Downsample = config.AllowLibationFixup && config.LameDownsampleMono,
-                MatchSourceBitrate = config.AllowLibationFixup && config.LameMatchSourceBR && config.LameTargetBitrate,
-                CreateCueSheet = config.CreateCueSheet
-            };
-
-            if (config.AllowLibationFixup || outputFormat == OutputFormat.Mp3)
-            {
-
-                long startMs = audiobookDlLic.TrimOutputToChapterLength ?
-                    contentLic.ContentMetadata.ChapterInfo.BrandIntroDurationMs : 0;
-
-                audiobookDlLic.ChapterInfo = new AAXClean.ChapterInfo(TimeSpan.FromMilliseconds(startMs));
-
-                for (int i = 0; i < contentLic.ContentMetadata.ChapterInfo.Chapters.Length; i++)
-                {
-                    var chapter = contentLic.ContentMetadata.ChapterInfo.Chapters[i];
-                    long chapLenMs = chapter.LengthMs;
-
-                    if (i == 0)
-                        chapLenMs -= startMs;
-
-                    if (config.StripAudibleBrandAudio && i == contentLic.ContentMetadata.ChapterInfo.Chapters.Length - 1)
-                        chapLenMs -= contentLic.ContentMetadata.ChapterInfo.BrandOutroDurationMs;
-
-                    audiobookDlLic.ChapterInfo.AddChapter(chapter.Title, TimeSpan.FromMilliseconds(chapLenMs));
-                }
-            }
-
-            audiobookDlLic.LameConfig = new();
-            audiobookDlLic.LameConfig.Mode = NAudio.Lame.MPEGMode.Mono;
-
-            if (config.LameTargetBitrate)
+		public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
+		{
+			var entries = new List<FilePathCache.CacheEntry>();
+			// these only work so minimally b/c CacheEntry is a record.
+			// in case of parallel decrypts, only capture the ones for this book id.
+			// if user somehow starts multiple decrypts of the same book in parallel: on their own head be it
+			void FilePathCache_Inserted(object sender, FilePathCache.CacheEntry e)
 			{
-                if (config.LameConstantBitrate)
-                    audiobookDlLic.LameConfig.BitRate = config.LameBitrate;
-                else
-                {
-                    audiobookDlLic.LameConfig.ABRRateKbps = config.LameBitrate;
-                    audiobookDlLic.LameConfig.VBR = NAudio.Lame.VBRMode.ABR;
-                    audiobookDlLic.LameConfig.WriteVBRTag = true;
-                }
+				if (e.Id.EqualsInsensitive(libraryBook.Book.AudibleProductId))
+					entries.Add(e);
 			}
+			void FilePathCache_Removed(object sender, FilePathCache.CacheEntry e)
+			{
+				if (e.Id.EqualsInsensitive(libraryBook.Book.AudibleProductId))
+					entries.Remove(e);
+			}
+
+			OnBegin(libraryBook);
+
+			try
+			{
+				if (libraryBook.Book.Audio_Exists())
+					return new StatusHandler { "Cannot find decrypt. Final audio file already exists" };
+
+				bool success = false;
+				try
+				{
+					FilePathCache.Inserted += FilePathCache_Inserted;
+					FilePathCache.Removed += FilePathCache_Removed;
+
+					success = await downloadAudiobookAsync(libraryBook);
+				}
+				finally
+				{
+					FilePathCache.Inserted -= FilePathCache_Inserted;
+					FilePathCache.Removed -= FilePathCache_Removed;
+				}
+
+				// decrypt failed
+				if (!success)
+				{
+					foreach (var tmpFile in entries.Where(f => f.FileType != FileType.AAXC))
+						FileUtility.SaferDelete(tmpFile.Path);
+
+					return abDownloader?.IsCanceled == true ?
+						new StatusHandler { "Cancelled" } : 
+						new StatusHandler { "Decrypt failed" };
+				}
+
+				// moves new files from temp dir to final dest.
+				// This could take a few seconds if moving hundreds of files.
+				var movedAudioFile = await Task.Run(() => moveFilesToBooksDir(libraryBook, entries));
+
+				// decrypt failed
+				if (!movedAudioFile)
+					return new StatusHandler { "Cannot find final audio file after decryption" };
+
+				if (Configuration.Instance.DownloadCoverArt)
+					DownloadCoverArt(libraryBook);
+
+				libraryBook.Book.UpdateBookStatus(LiberatedStatus.Liberated);
+
+				return new StatusHandler();
+			}
+			finally
+			{
+				OnCompleted(libraryBook);
+			}
+		}
+
+		private async Task<bool> downloadAudiobookAsync(LibraryBook libraryBook)
+		{
+			var config = Configuration.Instance;
+
+			downloadValidation(libraryBook);
+
+			var api = await libraryBook.GetApiAsync();
+			var contentLic = await api.GetDownloadLicenseAsync(libraryBook.Book.AudibleProductId);
+			var dlOptions = BuildDownloadOptions(libraryBook, config, contentLic);
+
+			var outFileName = AudibleFileStorage.Audio.GetInProgressFilename(libraryBook, dlOptions.OutputFormat.ToString().ToLower());
+			var cacheDir = AudibleFileStorage.DownloadsInProgressDirectory;
+
+			if (contentLic.DrmType != AudibleApi.Common.DrmType.Adrm)
+				abDownloader = new UnencryptedAudiobookDownloader(outFileName, cacheDir, dlOptions);
 			else
 			{
-                audiobookDlLic.LameConfig.VBR = NAudio.Lame.VBRMode.Default;
-                audiobookDlLic.LameConfig.VBRQuality = config.LameVBRQuality;
-                audiobookDlLic.LameConfig.WriteVBRTag = true;
-            }
+				AaxcDownloadConvertBase converter
+					= config.SplitFilesByChapter ? 
+					new AaxcDownloadMultiConverter(outFileName, cacheDir, dlOptions) :
+					new AaxcDownloadSingleConverter(outFileName, cacheDir, dlOptions);
 
-            return audiobookDlLic;
-        }
+				if (config.AllowLibationFixup)
+					converter.RetrievedMetadata += (_, tags) => tags.Generes = string.Join(", ", libraryBook.Book.CategoriesNames());
 
-        private static void downloadValidation(LibraryBook libraryBook)
-        {
-            string errorString(string field)
-                => $"{errorTitle()}\r\nCannot download book. {field} is not known. Try re-importing the account which owns this book.";
+				abDownloader = converter;
+			}
 
-            string errorTitle()
-            {
-                var title
-                    = (libraryBook.Book.Title.Length > 53)
-                    ? $"{libraryBook.Book.Title.Truncate(50)}..."
-                    : libraryBook.Book.Title;
-                var errorBookTitle = $"{title} [{libraryBook.Book.AudibleProductId}]";
-                return errorBookTitle;
-            };
+			abDownloader.DecryptProgressUpdate += OnStreamingProgressChanged;
+			abDownloader.DecryptTimeRemaining += OnStreamingTimeRemaining;
+			abDownloader.RetrievedTitle += OnTitleDiscovered;
+			abDownloader.RetrievedAuthors += OnAuthorsDiscovered;
+			abDownloader.RetrievedNarrators += OnNarratorsDiscovered;
+			abDownloader.RetrievedCoverArt += AaxcDownloader_RetrievedCoverArt;
+			abDownloader.FileCreated += (_, path) => OnFileCreated(libraryBook, path);
 
-            if (string.IsNullOrWhiteSpace(libraryBook.Account))
-                throw new Exception(errorString("Account"));
+			// REAL WORK DONE HERE
+			var success = await abDownloader.RunAsync();
 
-            if (string.IsNullOrWhiteSpace(libraryBook.Book.Locale))
-                throw new Exception(errorString("Locale"));
-        }
+			return success;
+		}
 
-        private void AaxcDownloader_RetrievedCoverArt(object _, byte[] e)
-        {
-            if (e is not null)
-                OnCoverImageDiscovered(e);
-            else if (Configuration.Instance.AllowLibationFixup)
-                abDownloader.SetCoverArt(OnRequestCoverArt());
-        }
+		private DownloadOptions BuildDownloadOptions(LibraryBook libraryBook, Configuration config, AudibleApi.Common.ContentLicense contentLic)
+		{
+			//I assume if ContentFormat == "MPEG" that the delivered file is an unencrypted mp3.
+			//I also assume that if DrmType != Adrm, the file will be an mp3.
+			//These assumptions may be wrong, and only time and bug reports will tell.
 
-        /// <summary>Move new files to 'Books' directory</summary>
-        /// <returns>True if audiobook file(s) were successfully created and can be located on disk. Else false.</returns>
-        private static bool moveFilesToBooksDir(LibraryBook libraryBook, List<FilePathCache.CacheEntry> entries)
-        {
-            // create final directory. move each file into it
-            var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
-            Directory.CreateDirectory(destinationDir);
+			bool encrypted = contentLic.DrmType == AudibleApi.Common.DrmType.Adrm;
 
-            FilePathCache.CacheEntry getFirstAudio() => entries.FirstOrDefault(f => f.FileType == FileType.Audio);
+			var outputFormat = !encrypted || (config.AllowLibationFixup && config.DecryptToLossy) ?
+					 OutputFormat.Mp3 : OutputFormat.M4b;
+
+			var dlOptions = new DownloadOptions
+				 (
+					libraryBook,
+					contentLic?.ContentMetadata?.ContentUrl?.OfflineUrl,
+					Resources.USER_AGENT
+				 )
+				{
+					AudibleKey = contentLic?.Voucher?.Key,
+					AudibleIV = contentLic?.Voucher?.Iv,
+					OutputFormat = outputFormat,
+					TrimOutputToChapterLength = config.AllowLibationFixup && config.StripAudibleBrandAudio,
+					RetainEncryptedFile = config.RetainAaxFile && encrypted,
+					StripUnabridged = config.AllowLibationFixup && config.StripUnabridged,
+					Downsample = config.AllowLibationFixup && config.LameDownsampleMono,
+					MatchSourceBitrate = config.AllowLibationFixup && config.LameMatchSourceBR && config.LameTargetBitrate,
+					CreateCueSheet = config.CreateCueSheet,
+					LameConfig = GetLameOptions(config)
+				};
+
+			var chapters = getChapters(contentLic.ContentMetadata.ChapterInfo.Chapters).OrderBy(c => c.StartOffsetMs).ToList();
+
+			if (config.AllowLibationFixup || outputFormat == OutputFormat.Mp3)
+			{
+				long startMs = dlOptions.TrimOutputToChapterLength ?
+					contentLic.ContentMetadata.ChapterInfo.BrandIntroDurationMs : 0;
+
+				dlOptions.ChapterInfo = new AAXClean.ChapterInfo(TimeSpan.FromMilliseconds(startMs));
+
+				for (int i = 0; i < chapters.Count; i++)
+				{
+					var chapter = chapters[i];
+					long chapLenMs = chapter.LengthMs;
+
+					if (i == 0)
+						chapLenMs -= startMs;
+
+					if (config.StripAudibleBrandAudio && i == chapters.Count - 1)
+						chapLenMs -= contentLic.ContentMetadata.ChapterInfo.BrandOutroDurationMs;
+
+					dlOptions.ChapterInfo.AddChapter(chapter.Title, TimeSpan.FromMilliseconds(chapLenMs));
+				}
+			}
+
+			return dlOptions;
+		}
+
+		private List<AudibleApi.Common.Chapter> getChapters(IEnumerable<AudibleApi.Common.Chapter> chapters)
+		{
+			List<AudibleApi.Common.Chapter> chaps = new();
+
+			foreach (var c in chapters)
+			{
+				if (c.Chapters is not null)
+				{
+					var firstSub = new AudibleApi.Common.Chapter
+					{
+						Title = $"{c.Title}: {c.Chapters[0].Title}",
+						StartOffsetMs = c.StartOffsetMs,
+						StartOffsetSec = c.StartOffsetSec,
+						LengthMs = c.LengthMs + c.Chapters[0].LengthMs
+					};
+
+					chaps.Add(firstSub);
+
+					var children = getChapters(c.Chapters[1..]);
+
+					foreach (var child in children)
+						child.Title = string.IsNullOrEmpty(c.Title) ? child.Title : $"{c.Title}: {child.Title}";
+
+					chaps.AddRange(children);
+				}
+				else
+					chaps.Add(c);
+			}
+			return chaps;
+		}
+
+		private static void downloadValidation(LibraryBook libraryBook)
+		{
+			string errorString(string field)
+				=> $"{errorTitle()}\r\nCannot download book. {field} is not known. Try re-importing the account which owns this book.";
+
+			string errorTitle()
+			{
+				var title
+					= (libraryBook.Book.Title.Length > 53)
+					? $"{libraryBook.Book.Title.Truncate(50)}..."
+					: libraryBook.Book.Title;
+				var errorBookTitle = $"{title} [{libraryBook.Book.AudibleProductId}]";
+				return errorBookTitle;
+			};
+
+			if (string.IsNullOrWhiteSpace(libraryBook.Account))
+				throw new Exception(errorString("Account"));
+
+			if (string.IsNullOrWhiteSpace(libraryBook.Book.Locale))
+				throw new Exception(errorString("Locale"));
+		}
+
+		private void AaxcDownloader_RetrievedCoverArt(object _, byte[] e)
+		{
+			if (e is not null)
+				OnCoverImageDiscovered(e);
+			else if (Configuration.Instance.AllowLibationFixup)
+				abDownloader.SetCoverArt(OnRequestCoverArt());
+		}
+
+		/// <summary>Move new files to 'Books' directory</summary>
+		/// <returns>True if audiobook file(s) were successfully created and can be located on disk. Else false.</returns>
+		private static bool moveFilesToBooksDir(LibraryBook libraryBook, List<FilePathCache.CacheEntry> entries)
+		{
+			// create final directory. move each file into it
+			var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
+			Directory.CreateDirectory(destinationDir);
+
+			FilePathCache.CacheEntry getFirstAudio() => entries.FirstOrDefault(f => f.FileType == FileType.Audio);
 
 			if (getFirstAudio() == default)
 				return false;
@@ -267,10 +270,10 @@ namespace FileLiberator
 			{
 				var entry = entries[i];
 
-				var realDest = FileUtility.SaferMoveToValidPath(entry.Path, Path.Combine(destinationDir, Path.GetFileName(entry.Path)));
+				var realDest = FileUtility.SaferMoveToValidPath(entry.Path, Path.Combine(destinationDir, Path.GetFileName(entry.Path)), Configuration.Instance.ReplacementCharacters);
 				FilePathCache.Insert(libraryBook.Book.AudibleProductId, realDest);
 
-				// propogate corrected path. Must update cache with corrected path. Also want updated path for cue file (after this for-loop)
+				// propagate corrected path. Must update cache with corrected path. Also want updated path for cue file (after this for-loop)
 				entries[i] = entry with { Path = realDest };
 			}
 
@@ -283,33 +286,33 @@ namespace FileLiberator
 			return true;
 		}
 
-        private void DownloadCoverArt(LibraryBook libraryBook)
+		private void DownloadCoverArt(LibraryBook libraryBook)
 		{
-            var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
-            var coverPath = AudibleFileStorage.Audio.GetBooksDirectoryFilename(libraryBook, ".jpg");
-            coverPath = Path.Combine(destinationDir, Path.GetFileName(coverPath));
+			var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
+			var coverPath = AudibleFileStorage.Audio.GetBooksDirectoryFilename(libraryBook, ".jpg");
+			coverPath = Path.Combine(destinationDir, Path.GetFileName(coverPath));
 
-            try
-            {
-                if (File.Exists(coverPath)) 
-                    FileUtility.SaferDelete(coverPath);
+			try
+			{
+				if (File.Exists(coverPath)) 
+					FileUtility.SaferDelete(coverPath);
 
-                (string picId, PictureSize size) = libraryBook.Book.PictureLarge is null ?
-                    (libraryBook.Book.PictureId, PictureSize.Native) :
-                    (libraryBook.Book.PictureLarge, PictureSize.Native);
+				(string picId, PictureSize size) = libraryBook.Book.PictureLarge is null ?
+					(libraryBook.Book.PictureId, PictureSize.Native) :
+					(libraryBook.Book.PictureLarge, PictureSize.Native);
 
-                var picBytes = PictureStorage.GetPictureSynchronously(new PictureDefinition(picId, size));
-                
-                if (picBytes.Length > 0)
-                    File.WriteAllBytes(coverPath, picBytes);
-            }
-            catch (Exception ex)
-            {
-                //Failure to download cover art should not be
-                //considered a failure to download the book
-                Serilog.Log.Logger.Error(ex, $"Error downloading cover art of {libraryBook.Book.AudibleProductId} to {coverPath} catalog product.");
-            }
-        }
+				var picBytes = PictureStorage.GetPictureSynchronously(new PictureDefinition(picId, size));
+				
+				if (picBytes.Length > 0)
+					File.WriteAllBytes(coverPath, picBytes);
+			}
+			catch (Exception ex)
+			{
+				//Failure to download cover art should not be
+				//considered a failure to download the book
+				Serilog.Log.Logger.Error(ex, $"Error downloading cover art of {libraryBook.Book.AudibleProductId} to {coverPath} catalog product.");
+			}
+		}
 
 	}
 }

Source/FileLiberator/DownloadOptions.cs

@@ -0,0 +1,46 @@
+using AaxDecrypter;
+using AAXClean;
+using Dinah.Core;
+using DataLayer;
+using LibationFileManager;
+using FileManager;
+
+namespace FileLiberator
+{
+    public class DownloadOptions : IDownloadOptions
+    {
+        public LibraryBook LibraryBook { get; }
+        public LibraryBookDto LibraryBookDto { get; }
+        public string DownloadUrl { get; }
+        public string UserAgent { get; }
+        public string AudibleKey { get; init; }
+        public string AudibleIV { get; init; }
+        public AaxDecrypter.OutputFormat OutputFormat { get; init; }
+        public bool TrimOutputToChapterLength { get; init; }
+        public bool RetainEncryptedFile { get; init; }
+        public bool StripUnabridged { get; init; }
+        public bool CreateCueSheet { get; init; }
+        public ChapterInfo ChapterInfo { get; set; }
+        public NAudio.Lame.LameConfig LameConfig { get; set; }
+        public bool Downsample { get; set; }
+        public bool MatchSourceBitrate { get; set; }
+        public ReplacementCharacters ReplacementCharacters => Configuration.Instance.ReplacementCharacters;
+
+        public string GetMultipartFileName(MultiConvertFileProperties props)
+            => Templates.ChapterFile.GetFilename(LibraryBookDto, props);
+
+        public string GetMultipartTitleName(MultiConvertFileProperties props)
+            => Templates.ChapterTitle.GetTitle(LibraryBookDto, props);
+
+        public DownloadOptions(LibraryBook libraryBook, string downloadUrl, string userAgent)
+        {
+            LibraryBook = ArgumentValidator.EnsureNotNull(libraryBook, nameof(libraryBook));
+            DownloadUrl = ArgumentValidator.EnsureNotNullOrEmpty(downloadUrl, nameof(downloadUrl));
+            UserAgent = ArgumentValidator.EnsureNotNullOrEmpty(userAgent, nameof(userAgent));
+
+            LibraryBookDto = LibraryBook.ToDto();
+
+            // no null/empty check for key/iv. unencrypted files do not have them
+        }
+    }
+}

Source/FileLiberator/DownloadPdf.cs

@@ -57,27 +57,18 @@ namespace FileLiberator
 
 		private async Task<string> downloadPdfAsync(LibraryBook libraryBook, string proposedDownloadFilePath)
 		{
-			OnStreamingBegin(proposedDownloadFilePath);
+			var api = await libraryBook.GetApiAsync();
+			var downloadUrl = await api.GetPdfDownloadLinkAsync(libraryBook.Book.AudibleProductId);
 
-			try
-			{
-				var api = await libraryBook.GetApiAsync();
-				var downloadUrl = await api.GetPdfDownloadLinkAsync(libraryBook.Book.AudibleProductId);
+			var progress = new Progress<DownloadProgress>(OnStreamingProgressChanged);
 
-				var progress = new Progress<DownloadProgress>(OnStreamingProgressChanged);
+			var client = new HttpClient();
 
-				var client = new HttpClient();
+			var actualDownloadedFilePath = await client.DownloadFileAsync(downloadUrl, proposedDownloadFilePath, progress);
+			OnFileCreated(libraryBook, actualDownloadedFilePath);
 
-				var actualDownloadedFilePath = await client.DownloadFileAsync(downloadUrl, proposedDownloadFilePath, progress);
-				OnFileCreated(libraryBook, actualDownloadedFilePath);
-
-				OnStatusUpdate(actualDownloadedFilePath);
-				return actualDownloadedFilePath;
-			}
-			finally
-			{
-				OnStreamingCompleted(proposedDownloadFilePath);
-			}
+			OnStatusUpdate(actualDownloadedFilePath);
+			return actualDownloadedFilePath;
 		}
 
 		private static StatusHandler verifyDownload(string actualDownloadedFilePath)

Source/FileLiberator/Processable.cs

@@ -5,17 +5,22 @@ using System.Threading.Tasks;
 using DataLayer;
 using Dinah.Core;
 using Dinah.Core.ErrorHandling;
+using Dinah.Core.Net.Http;
 using LibationFileManager;
 
 namespace FileLiberator
 {
-    public abstract class Processable : Streamable
+    public abstract class Processable
     {
         public abstract string Name { get; }
         public event EventHandler<LibraryBook> Begin;
 
         /// <summary>General string message to display. DON'T rely on this for success, failure, or control logic</summary>
         public event EventHandler<string> StatusUpdate;
+        /// <summary>Fired when a file is successfully saved to disk</summary>
+        public event EventHandler<(string id, string path)> FileCreated;
+        public event EventHandler<DownloadProgress> StreamingProgressChanged;
+        public event EventHandler<TimeSpan> StreamingTimeRemaining;
 
         public event EventHandler<LibraryBook> Completed;
 
@@ -69,6 +74,23 @@ namespace FileLiberator
             StatusUpdate?.Invoke(this, statusUpdate);
         }
 
+        protected void OnFileCreated(LibraryBook libraryBook, string path)
+        {
+            Serilog.Log.Logger.Information("File created {@DebugInfo}", new { Name = nameof(FileCreated), libraryBook.Book.AudibleProductId, path });
+            FilePathCache.Insert(libraryBook.Book.AudibleProductId, path);
+            FileCreated?.Invoke(this, (libraryBook.Book.AudibleProductId, path));
+        }
+
+        protected void OnStreamingProgressChanged(DownloadProgress progress)
+            => OnStreamingProgressChanged(null, progress);
+        protected void OnStreamingProgressChanged(object _, DownloadProgress progress)
+            => StreamingProgressChanged?.Invoke(this, progress);
+
+        protected void OnStreamingTimeRemaining(TimeSpan timeRemaining)
+            => OnStreamingTimeRemaining(null, timeRemaining);
+        protected void OnStreamingTimeRemaining(object _, TimeSpan timeRemaining)
+            => StreamingTimeRemaining?.Invoke(this, timeRemaining);
+
         protected void OnCompleted(LibraryBook libraryBook)
         {
             Serilog.Log.Logger.Debug("Event fired {@DebugInfo}", new { Name = nameof(Completed), Book = libraryBook.LogFriendly() });

Source/FileLiberator/Streamable.cs

@@ -1,47 +0,0 @@
-using System;
-using Dinah.Core.Net.Http;
-
-namespace FileLiberator
-{
-    public abstract class Streamable
-    {
-        public event EventHandler<string> StreamingBegin;
-        public event EventHandler<DownloadProgress> StreamingProgressChanged;
-        public event EventHandler<TimeSpan> StreamingTimeRemaining;
-        public event EventHandler<string> StreamingCompleted;
-        /// <summary>Fired when a file is successfully saved to disk</summary>
-        public event EventHandler<(string id, string path)> FileCreated;
-
-        protected void OnStreamingBegin(string filePath)
-        {
-            Serilog.Log.Logger.Debug("Event fired {@DebugInfo}", new { Name = nameof(StreamingBegin), Message = filePath });
-            StreamingBegin?.Invoke(this, filePath);
-        }
-
-        protected void OnStreamingProgressChanged(DownloadProgress progress) => OnStreamingProgressChanged(null, progress);
-        protected void OnStreamingProgressChanged(object _, DownloadProgress progress)
-        {
-            StreamingProgressChanged?.Invoke(this, progress);
-        }
-
-        protected void OnStreamingTimeRemaining(TimeSpan timeRemaining) => OnStreamingTimeRemaining(null, timeRemaining);
-        protected void OnStreamingTimeRemaining(object _, TimeSpan timeRemaining)
-        {
-            StreamingTimeRemaining?.Invoke(this, timeRemaining);
-        }
-
-        protected void OnStreamingCompleted(string filePath)
-        {
-            Serilog.Log.Logger.Debug("Event fired {@DebugInfo}", new { Name = nameof(StreamingCompleted), Message = filePath });
-            StreamingCompleted?.Invoke(this, filePath);
-        }
-
-        protected void OnFileCreated(DataLayer.LibraryBook libraryBook, string path) => OnFileCreated(libraryBook.Book.AudibleProductId, path);
-        protected void OnFileCreated(string id, string path)
-        {
-            Serilog.Log.Logger.Information("File created {@DebugInfo}", new { Name = nameof(FileCreated), id, path });
-            LibationFileManager.FilePathCache.Insert(id, path);
-            FileCreated?.Invoke(this, (id, path));
-        }
-    }
-}

Source/FileManager/BackgroundFileSystem.cs

@@ -12,7 +12,7 @@ namespace FileManager
     /// </summary>
     public class BackgroundFileSystem
     {
-        public string RootDirectory { get; private set; }
+        public LongPath RootDirectory { get; private set; }
         public string SearchPattern { get; private set; }
         public SearchOption SearchOption { get; private set; }
 
@@ -21,9 +21,9 @@ namespace FileManager
         private Task backgroundScanner { get; set; }
 
         private object fsCacheLocker { get; } = new();
-        private List<string> fsCache { get; } = new();
+        private List<LongPath> fsCache { get; } = new();
 
-        public BackgroundFileSystem(string rootDirectory, string searchPattern, SearchOption searchOptions)
+        public BackgroundFileSystem(LongPath rootDirectory, string searchPattern, SearchOption searchOptions)
         {
             RootDirectory = rootDirectory;
             SearchPattern = searchPattern;
@@ -32,12 +32,18 @@ namespace FileManager
             Init();
         }
 
-        public string FindFile(System.Text.RegularExpressions.Regex regex)
+        public LongPath FindFile(System.Text.RegularExpressions.Regex regex)
         {
             lock (fsCacheLocker)
                 return fsCache.FirstOrDefault(s => regex.IsMatch(s));
         }
 
+        public List<LongPath> FindFiles(System.Text.RegularExpressions.Regex regex)
+        {
+            lock (fsCacheLocker)
+                return fsCache.Where(s => regex.IsMatch(s)).ToList();
+        }
+
         public void RefreshFiles()
         {
             lock (fsCacheLocker)
@@ -73,8 +79,13 @@ namespace FileManager
             //Stop raising events
             fileSystemWatcher?.Dispose();
 
-            //Calling CompleteAdding() will cause background scanner to terminate.
-            directoryChangesEvents?.CompleteAdding();
+            try
+            {
+                //Calling CompleteAdding() will cause background scanner to terminate.
+                directoryChangesEvents?.CompleteAdding();
+            }
+            // if directoryChangesEvents is non-null and isDisposed, this exception is thrown. there's no other way to check >:(
+            catch (ObjectDisposedException) { }
 
             //Wait for background scanner to terminate before reinitializing.
             backgroundScanner?.Wait();
@@ -124,16 +135,18 @@ namespace FileManager
             }
         }
 
-        private void RemovePath(string path)
+        private void RemovePath(LongPath path)
         {
-            var pathsToRemove = fsCache.Where(p => p.StartsWith(path)).ToArray();
+            path = path.LongPathName;
+            var pathsToRemove = fsCache.Where(p => ((string)p).StartsWith(path)).ToArray();
 
             foreach (var p in pathsToRemove)
                 fsCache.Remove(p);
         }
 
-        private void AddPath(string path)
+        private void AddPath(LongPath path)
         {
+            path = path.LongPathName;
             if (!File.Exists(path) && !Directory.Exists(path))
                 return;
             if (File.GetAttributes(path).HasFlag(FileAttributes.Directory))
@@ -141,12 +154,14 @@ namespace FileManager
             else
                 AddUniqueFile(path);
         }
-        private void AddUniqueFiles(IEnumerable<string> newFiles)
+
+        private void AddUniqueFiles(IEnumerable<LongPath> newFiles)
         {
             foreach (var file in newFiles)
                 AddUniqueFile(file);
         }
-        private void AddUniqueFile(string newFile)
+
+        private void AddUniqueFile(LongPath newFile)
         {
             if (!fsCache.Contains(newFile))
                 fsCache.Add(newFile);

Source/FileManager/FileManager.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Dinah.Core" Version="4.4.0.1" />
+    <PackageReference Include="Dinah.Core" Version="4.4.1.1" />
     <PackageReference Include="Polly" Version="7.2.3" />
   </ItemGroup>
 

Source/FileManager/FileNamingTemplate.cs

@@ -1,64 +1,105 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
-using Dinah.Core;
+using System.Text;
 
 namespace FileManager
 {
-    /// <summary>Get valid filename. Advanced features incl. parameterized template</summary>
-    public class FileNamingTemplate
-    {
-        /// <summary>Proposed full file path. May contain optional html-styled template tags. Eg: &lt;name&gt;</summary>
-        public string Template { get; }
+	/// <summary>Get valid filename. Advanced features incl. parameterized template</summary>
+	public class FileNamingTemplate : NamingTemplate
+	{
+		/// <param name="template">Proposed file name with optional html-styled template tags.</param>
+		public FileNamingTemplate(string template) : base(template) { }
 
-        /// <param name="template">Proposed file name with optional html-styled template tags.</param>
-        public FileNamingTemplate(string template) => Template = ArgumentValidator.EnsureNotNullOrWhiteSpace(template, nameof(template));
+		/// <summary>Generate a valid path for this file or directory</summary>
+		public LongPath GetFilePath(ReplacementCharacters replacements, bool returnFirstExisting = false)
+		{
+			string fileName = 
+				Template.EndsWith(Path.DirectorySeparatorChar) || Template.EndsWith(Path.AltDirectorySeparatorChar) ?
+					FileUtility.RemoveLastCharacter(Template) : 
+					Template;
 
-        /// <summary>Optional step 1: Replace html-styled template tags with parameters. Eg {"name", "Bill Gates"} => /&lt;name&gt;/ => /Bill Gates/</summary>
-        public Dictionary<string, object> ParameterReplacements { get; } = new Dictionary<string, object>();
+			List<string> pathParts = new();
 
-        /// <summary>Convenience method</summary>
-        public void AddParameterReplacement(string key, object value)
-            // using .Add() instead of "[key] = value" will make unintended overwriting throw exception
-            => ParameterReplacements.Add(key, value);
+			var paramReplacements = ParameterReplacements.ToDictionary(r => $"<{formatKey(r.Key)}>", r => formatValue(r.Value, replacements));
 
-        /// <summary>If set, truncate each parameter replacement to this many characters. Default 50</summary>
-        public int? ParameterMaxSize { get; set; } = 50;
+			while (!string.IsNullOrEmpty(fileName))
+			{
+				var file = Path.GetFileName(fileName);
 
-        /// <summary>Optional step 2: Replace all illegal characters with this. Default=<see cref="string.Empty"/></summary>
-        public string IllegalCharacterReplacements { get; set; }
+				if (Path.IsPathRooted(Template) && file == string.Empty)
+				{
+					pathParts.Add(fileName);
+					break;
+				}
+				else
+				{
+					file = replaceFileName(file, paramReplacements);
+					fileName = Path.GetDirectoryName(fileName);
+					pathParts.Add(file);
+				}
+			}
 
-        /// <summary>Generate a valid path for this file or directory</summary>
-        public string GetFilePath(bool returnFirstExisting = false)
-        {
-            var filename = Template;
+			pathParts.Reverse();
 
-            foreach (var r in ParameterReplacements)
-                filename = filename.Replace($"<{formatKey(r.Key)}>", formatValue(r.Value));
+			return FileUtility.GetValidFilename(Path.Join(pathParts.ToArray()), replacements, returnFirstExisting);
+		}
 
-            return FileUtility.GetValidFilename(filename, IllegalCharacterReplacements, returnFirstExisting);
-        }
+		private string replaceFileName(string filename, Dictionary<string,string> paramReplacements)
+		{
+			List<StringBuilder> filenameParts = new();
+			//Build the filename in parts, replacing replacement parameters with
+			//their values, and storing the parts in a list.
+			while (!string.IsNullOrEmpty(filename))
+			{
+				int openIndex = filename.IndexOf('<');
+				int closeIndex = filename.IndexOf('>');
 
-        private static string formatKey(string key)
-            => key
-            .Replace("<", "")
-            .Replace(">", "");
+				if (openIndex == 0 && closeIndex > 0)
+				{
+					var key = filename[..(closeIndex + 1)];
 
-        private string formatValue(object value)
-        {
-            if (value is null)
-                return "";
+					if (paramReplacements.ContainsKey(key))
+						filenameParts.Add(new StringBuilder(paramReplacements[key]));
+					else
+						filenameParts.Add(new StringBuilder(key));
 
-            // Other illegal characters will be taken care of later. Must take care of slashes now so params can't introduce new folders.
-            // Esp important for file templates.
-            var val = value
-                .ToString()
-                .Replace($"{System.IO.Path.DirectorySeparatorChar}", IllegalCharacterReplacements)
-                .Replace($"{System.IO.Path.AltDirectorySeparatorChar}", IllegalCharacterReplacements);
-            return 
-                ParameterMaxSize.HasValue && ParameterMaxSize.Value > 0
-                ? val.Truncate(ParameterMaxSize.Value)
-                : val;
-        }
-    }
+					filename = filename[(closeIndex + 1)..];
+				}
+				else if (openIndex > 0 && closeIndex > openIndex)
+				{
+					var other = filename[..openIndex];
+					filenameParts.Add(new StringBuilder(other));
+					filename = filename[openIndex..];
+				}
+				else
+				{
+					filenameParts.Add(new StringBuilder(filename));
+					filename = string.Empty;
+				}
+			}
+
+			//Remove 1 character from the end of the longest filename part until
+			//the total filename is less than max filename length
+			while (filenameParts.Sum(p => p.Length) > LongPath.MaxFilenameLength)
+			{
+				int maxLength = filenameParts.Max(p => p.Length);
+				var maxEntry = filenameParts.First(p => p.Length == maxLength);
+
+				maxEntry.Remove(maxLength - 1, 1);
+			}
+			return string.Join("", filenameParts);
+		}
+
+		private string formatValue(object value, ReplacementCharacters replacements)
+		{
+			if (value is null)
+				return "";
+
+			// Other illegal characters will be taken care of later. Must take care of slashes now so params can't introduce new folders.
+			// Esp important for file templates.
+			return replacements.ReplaceInvalidFilenameChars(value.ToString());
+		}
+	}
 }

Source/FileManager/FileUtility.cs

@@ -9,264 +9,230 @@ using Polly.Retry;
 
 namespace FileManager
 {
-    public static class FileUtility
-    {
-        /// <summary>
-        /// "txt" => ".txt"
-        /// <br />".txt" => ".txt"
-        /// <br />null or whitespace => ""
-        /// </summary>
-        public static string GetStandardizedExtension(string extension)
-            => string.IsNullOrWhiteSpace(extension)
-            ? (extension ?? "")?.Trim()
-            : '.' + extension.Trim().Trim('.');
+	public static class FileUtility
+	{
+		/// <summary>
+		/// "txt" => ".txt"
+		/// <br />".txt" => ".txt"
+		/// <br />null or whitespace => ""
+		/// </summary>
+		public static string GetStandardizedExtension(string extension)
+			=> string.IsNullOrWhiteSpace(extension)
+			? (extension ?? "")?.Trim()
+			: '.' + extension.Trim().Trim('.');
 
-        /// <summary>
-        /// Return position with correct number of leading zeros.
-        /// <br />- 2 of 9 => "2"
-        /// <br />- 2 of 90 => "02"
-        /// <br />- 2 of 900 => "002"
-        /// </summary>
-        /// <param name="position">position in sequence. The 'x' in 'x of y'</param>
-        /// <param name="total">total qty in sequence. The 'y' in 'x of y'</param>
-        public static string GetSequenceFormatted(int position, int total)
-        {
-            ArgumentValidator.EnsureGreaterThan(position, nameof(position), 0);
-            ArgumentValidator.EnsureGreaterThan(total, nameof(total), 0);
-            if (position > total)
-                throw new ArgumentException($"{position} may not be greater than {total}");
+		/// <summary>
+		/// Return position with correct number of leading zeros.
+		/// <br />- 2 of 9 => "2"
+		/// <br />- 2 of 90 => "02"
+		/// <br />- 2 of 900 => "002"
+		/// </summary>
+		/// <param name="position">position in sequence. The 'x' in 'x of y'</param>
+		/// <param name="total">total qty in sequence. The 'y' in 'x of y'</param>
+		public static string GetSequenceFormatted(int position, int total)
+		{
+			ArgumentValidator.EnsureGreaterThan(position, nameof(position), 0);
+			ArgumentValidator.EnsureGreaterThan(total, nameof(total), 0);
+			if (position > total)
+				throw new ArgumentException($"{position} may not be greater than {total}");
 
-            return position.ToString().PadLeft(total.ToString().Length, '0');
-        }
+			return position.ToString().PadLeft(total.ToString().Length, '0');
+		}
 
-        private const int MAX_FILENAME_LENGTH = 255;
-        private const int MAX_DIRECTORY_LENGTH = 247;
 
-        /// <summary>
-        /// Ensure valid file name path: 
-        /// <br/>- remove invalid chars
-        /// <br/>- ensure uniqueness
-        /// <br/>- enforce max file length
-        /// </summary>
-        public static string GetValidFilename(string path, string illegalCharacterReplacements = "", bool returnFirstExisting = false)
-        {
-            ArgumentValidator.EnsureNotNull(path, nameof(path));
+		/// <summary>
+		/// Ensure valid file name path: 
+		/// <br/>- remove invalid chars
+		/// <br/>- ensure uniqueness
+		/// <br/>- enforce max file length
+		/// </summary>
+		public static LongPath GetValidFilename(LongPath path, ReplacementCharacters replacements, bool returnFirstExisting = false)
+		{
+			ArgumentValidator.EnsureNotNull(path, nameof(path));
 
-            // remove invalid chars
-            path = GetSafePath(path, illegalCharacterReplacements);
+			// remove invalid chars
+			path = GetSafePath(path, replacements);
 
-            // ensure uniqueness and check lengths
-            var dir = Path.GetDirectoryName(path);
-            dir = dir.Truncate(MAX_DIRECTORY_LENGTH);
+			// ensure uniqueness and check lengths
+			var dir = Path.GetDirectoryName(path);
+			dir = dir?.Truncate(LongPath.MaxDirectoryLength) ?? string.Empty;
 
-            var filename = Path.GetFileNameWithoutExtension(path);
-            var fileStem = Path.Combine(dir, filename);
+			var extension = Path.GetExtension(path);
 
-            var extension = Path.GetExtension(path);
+			var filename = Path.GetFileNameWithoutExtension(path).Truncate(LongPath.MaxFilenameLength - extension.Length);
+			var fileStem = Path.Combine(dir, filename);
 
-            var fullfilename = fileStem.Truncate(MAX_FILENAME_LENGTH - extension.Length) + extension;
 
-            fullfilename = removeInvalidWhitespace(fullfilename);
+			var fullfilename = fileStem.Truncate(LongPath.MaxPathLength - extension.Length) + extension;
 
-            var i = 0;
-            while (File.Exists(fullfilename) && !returnFirstExisting)
-            {
-                var increm = $" ({++i})";
-                fullfilename = fileStem.Truncate(MAX_FILENAME_LENGTH - increm.Length - extension.Length) + increm + extension;
-            }
+			fullfilename = removeInvalidWhitespace(fullfilename);
 
-            return fullfilename;
-        }
+			var i = 0;
+			while (File.Exists(fullfilename) && !returnFirstExisting)
+			{
+				var increm = $" ({++i})";
+				fullfilename = fileStem.Truncate(LongPath.MaxPathLength - increm.Length - extension.Length) + increm + extension;
+			}
 
-        // GetInvalidFileNameChars contains everything in GetInvalidPathChars plus ':', '*', '?', '\\', '/'
+			return fullfilename;
+		}
 
-        /// <summary>Use with file name, not full path. Valid path charaters which are invalid file name characters will be replaced: ':', '\\', '/'</summary>
-        public static string GetSafeFileName(string str, string illegalCharacterReplacements = "")
-            => string.Join(illegalCharacterReplacements ?? "", str.Split(Path.GetInvalidFileNameChars()));
+		/// <summary>Use with full path, not file name. Valid path characters which are invalid file name characters will be retained: '\\', '/'</summary>
+		public static LongPath GetSafePath(LongPath path, ReplacementCharacters replacements)
+		{
+			ArgumentValidator.EnsureNotNull(path, nameof(path));
 
-        /// <summary>Use with full path, not file name. Valid path charaters which are invalid file name characters will be retained: '\\', '/'</summary>
-        public static string GetSafePath(string path, string illegalCharacterReplacements = "")
-        {
-            ArgumentValidator.EnsureNotNull(path, nameof(path));
+			var pathNoPrefix = path.PathWithoutPrefix;
 
-            path = replaceInvalidChars(path, illegalCharacterReplacements);
-            path = standardizeSlashes(path);
-            path = replaceColons(path, illegalCharacterReplacements);
-            path = removeDoubleSlashes(path);
+			pathNoPrefix = replacements.ReplaceInvalidPathChars(pathNoPrefix);
+			pathNoPrefix = removeDoubleSlashes(pathNoPrefix);
 
-            return path;
-        }
+			return pathNoPrefix;
+		}
 
-        private static char[] invalidChars { get; } = Path.GetInvalidPathChars().Union(new[] {
-                '*', '?',
-                // these are weird. If you run Path.GetInvalidPathChars() in Visual Studio's "C# Interactive", then these characters are included.
-                // In live code, Path.GetInvalidPathChars() does not include them
-                '"', '<', '>'
-            }).ToArray();
-        private static string replaceInvalidChars(string path, string illegalCharacterReplacements)
-            => string.Join(illegalCharacterReplacements ?? "", path.Split(invalidChars));
+		private static string removeDoubleSlashes(string path)
+		{
+			if (path.Length < 2)
+				return path;
 
-        private static string standardizeSlashes(string path)
-            => path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
+			// exception: don't try to condense the initial dbl bk slashes in a path. eg: \\192.168.0.1
 
-        private static string replaceColons(string path, string illegalCharacterReplacements)
-        {
-            // replace all colons except within the first 2 chars
-            var builder = new System.Text.StringBuilder();
-            for (var i = 0; i < path.Length; i++)
-            {
-                var c = path[i];
-                if (i >= 2 && c == ':')
-                    builder.Append(illegalCharacterReplacements);
-                else
-                    builder.Append(c);
-            }
-            return builder.ToString();
-        }
+			var remainder = path[1..];
+			var dblSeparator = $"{Path.DirectorySeparatorChar}{Path.DirectorySeparatorChar}";
+			while (remainder.Contains(dblSeparator))
+				remainder = remainder.Replace(dblSeparator, $"{Path.DirectorySeparatorChar}");
 
-        private static string removeDoubleSlashes(string path)
-        {
-            if (path.Length < 2)
-                return path;
+			return path[0] + remainder;
+		}
 
-            // exception: don't try to condense the initial dbl bk slashes in a path. eg: \\192.168.0.1
+		private static string removeInvalidWhitespace_pattern { get; } = $@"[\s\.]*\{Path.DirectorySeparatorChar}\s*";
+		private static Regex removeInvalidWhitespace_regex { get; } = new(removeInvalidWhitespace_pattern, RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
 
-            var remainder = path[1..];
-            var dblSeparator = $"{Path.DirectorySeparatorChar}{Path.DirectorySeparatorChar}";
-            while (remainder.Contains(dblSeparator))
-                remainder = remainder.Replace(dblSeparator, $"{Path.DirectorySeparatorChar}");
+		/// <summary>no part of the path may begin or end in whitespace</summary>
+		private static string removeInvalidWhitespace(string fullfilename)
+		{
+			// no whitespace at beginning or end
+			// replace whitespace around path slashes
+			//    regex (with space added for clarity)
+			//    \s*  \\  \s*    =>    \
+			// no ending dots. beginning dots are valid
 
-            return path[0] + remainder;
-        }
+			// regex is easier by ending with separator
+			fullfilename += Path.DirectorySeparatorChar;
+			fullfilename = removeInvalidWhitespace_regex.Replace(fullfilename, Path.DirectorySeparatorChar.ToString());
+			// take separator back off
+			fullfilename = RemoveLastCharacter(fullfilename);
 
-        private static string removeInvalidWhitespace_pattern { get; } = $@"[\s\.]*\{Path.DirectorySeparatorChar}\s*";
-        private static Regex removeInvalidWhitespace_regex { get; } = new(removeInvalidWhitespace_pattern, RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
+			fullfilename = removeDoubleSlashes(fullfilename);
+			return fullfilename;
+		}
 
-        /// <summary>no part of the path may begin or end in whitespace</summary>
-        private static string removeInvalidWhitespace(string fullfilename)
-        {
-            // no whitespace at beginning or end
-            // replace whitespace around path slashes
-            //    regex (with space added for clarity)
-            //    \s*  \\  \s*    =>    \
-            // no ending dots. beginning dots are valid
+		public static string RemoveLastCharacter(this string str) => string.IsNullOrEmpty(str) ? str : str[..^1];
 
-            // regex is easier by ending with separator
-            fullfilename += Path.DirectorySeparatorChar;
-            fullfilename = removeInvalidWhitespace_regex.Replace(fullfilename, Path.DirectorySeparatorChar.ToString());
-            // take seperator back off
-            fullfilename = RemoveLastCharacter(fullfilename);
+		/// <summary>
+		/// Move file.
+		/// <br/>- Ensure valid file name path: remove invalid chars, ensure uniqueness, enforce max file length
+		/// <br/>- Perform <see cref="SaferMove"/>
+		/// <br/>- Return valid path
+		/// </summary>
+		public static string SaferMoveToValidPath(LongPath source, LongPath destination, ReplacementCharacters replacements)
+		{
+			destination = GetValidFilename(destination, replacements);
+			SaferMove(source, destination);
+			return destination;
+		}
 
-            fullfilename = removeDoubleSlashes(fullfilename);
-            return fullfilename;
-        }
+		private static int maxRetryAttempts { get; } = 3;
+		private static TimeSpan pauseBetweenFailures { get; } = TimeSpan.FromMilliseconds(100);
+		private static RetryPolicy retryPolicy { get; } =
+			Policy
+			.Handle<Exception>()
+			.WaitAndRetry(maxRetryAttempts, i => pauseBetweenFailures);
 
-        public static string RemoveLastCharacter(this string str) => string.IsNullOrEmpty(str) ? str : str[..^1];
+		/// <summary>Delete file. No error when source does not exist. Retry up to 3 times before throwing exception.</summary>
+		public static void SaferDelete(LongPath source)
+			=> retryPolicy.Execute(() =>
+			{
+				try
+				{
+					if (!File.Exists(source))
+					{
+						Serilog.Log.Logger.Debug("No file to delete: {@DebugText}", new { source });
+						return;
+					}
 
-        /// <summary>
-        /// Move file.
-        /// <br/>- Ensure valid file name path: remove invalid chars, ensure uniqueness, enforce max file length
-        /// <br/>- Perform <see cref="SaferMove"/>
-        /// <br/>- Return valid path
-        /// </summary>
-        public static string SaferMoveToValidPath(string source, string destination)
-        {
-            destination = GetValidFilename(destination);
-            SaferMove(source, destination);
-            return destination;
-        }
+					Serilog.Log.Logger.Debug("Attempt to delete file: {@DebugText}", new { source });
+					File.Delete(source);
+					Serilog.Log.Logger.Information("File successfully deleted: {@DebugText}", new { source });
+				}
+				catch (Exception e)
+				{
+					Serilog.Log.Logger.Error(e, "Failed to delete file: {@DebugText}", new { source });
+					throw;
+				}
+			});
 
-        private static int maxRetryAttempts { get; } = 3;
-        private static TimeSpan pauseBetweenFailures { get; } = TimeSpan.FromMilliseconds(100);
-        private static RetryPolicy retryPolicy { get; } =
-            Policy
-            .Handle<Exception>()
-            .WaitAndRetry(maxRetryAttempts, i => pauseBetweenFailures);
+		/// <summary>Move file. No error when source does not exist. Retry up to 3 times before throwing exception.</summary>
+		public static void SaferMove(LongPath source, LongPath destination)
+			=> retryPolicy.Execute(() =>
+			{
+				try
+				{
+					if (!File.Exists(source))
+					{
+						Serilog.Log.Logger.Debug("No file to move: {@DebugText}", new { source });
+						return;
+					}
 
-        /// <summary>Delete file. No error when source does not exist. Retry up to 3 times before throwing exception.</summary>
-        public static void SaferDelete(string source)
-            => retryPolicy.Execute(() =>
-            {
-                try
-                {
-                    if (!File.Exists(source))
-                    {
-                        Serilog.Log.Logger.Debug("No file to delete: {@DebugText}", new { source });
-                        return;
-                    }
+					SaferDelete(destination);
 
-                    Serilog.Log.Logger.Debug("Attempt to delete file: {@DebugText}", new { source });
-                    File.Delete(source);
-                    Serilog.Log.Logger.Information("File successfully deleted: {@DebugText}", new { source });
-                }
-                catch (Exception e)
-                {
-                    Serilog.Log.Logger.Error(e, "Failed to delete file: {@DebugText}", new { source });
-                    throw;
-                }
-            });
+					var dir = Path.GetDirectoryName(destination);
+					Serilog.Log.Logger.Debug("Attempt to create directory: {@DebugText}", new { dir });
+					Directory.CreateDirectory(dir);
 
-        /// <summary>Move file. No error when source does not exist. Retry up to 3 times before throwing exception.</summary>
-		public static void SaferMove(string source, string destination)
-            => retryPolicy.Execute(() =>
-            {
-                try
-                {
-                    if (!File.Exists(source))
-                    {
-                        Serilog.Log.Logger.Debug("No file to move: {@DebugText}", new { source });
-                        return;
-                    }
+					Serilog.Log.Logger.Debug("Attempt to move file: {@DebugText}", new { source, destination });
+					File.Move(source, destination);
+					Serilog.Log.Logger.Information("File successfully moved: {@DebugText}", new { source, destination });
+				}
+				catch (Exception e)
+				{
+					Serilog.Log.Logger.Error(e, "Failed to move file: {@DebugText}", new { source, destination });
+					throw;
+				}
+			});
 
-                    SaferDelete(destination);
+		/// <summary>
+		/// A safer way to get all the files in a directory and sub directory without crashing on UnauthorizedException or PathTooLongException
+		/// </summary>
+		/// <param name="rootPath">Starting directory</param>
+		/// <param name="patternMatch">Filename pattern match</param>
+		/// <param name="searchOption">Search subdirectories or only top level directory for files</param>
+		/// <returns>List of files</returns>
+		public static IEnumerable<LongPath> SaferEnumerateFiles(LongPath path, string searchPattern = "*", SearchOption searchOption = SearchOption.TopDirectoryOnly)
+		{
+			var foundFiles = Enumerable.Empty<LongPath>();
 
-                    var dir = Path.GetDirectoryName(destination);
-                    Serilog.Log.Logger.Debug("Attempt to create directory: {@DebugText}", new { dir });
-                    Directory.CreateDirectory(dir);
+			if (searchOption == SearchOption.AllDirectories)
+			{
+				try
+				{
+					IEnumerable <LongPath> subDirs = Directory.EnumerateDirectories(path).Select(p => (LongPath)p);
+					// Add files in subdirectories recursively to the list
+					foreach (string dir in subDirs)
+						foundFiles = foundFiles.Concat(SaferEnumerateFiles(dir, searchPattern, searchOption));
+				}
+				catch (UnauthorizedAccessException) { }
+				catch (PathTooLongException) { }
+			}
 
-                    Serilog.Log.Logger.Debug("Attempt to move file: {@DebugText}", new { source, destination });
-                    File.Move(source, destination);
-                    Serilog.Log.Logger.Information("File successfully moved: {@DebugText}", new { source, destination });
-                }
-                catch (Exception e)
-                {
-                    Serilog.Log.Logger.Error(e, "Failed to move file: {@DebugText}", new { source, destination });
-                    throw;
-                }
-            });
+			try
+			{
+				// Add files from the current directory
+				foundFiles = foundFiles.Concat(Directory.EnumerateFiles(path, searchPattern).Select(f => (LongPath)f));
+			}
+			catch (UnauthorizedAccessException) { }
 
-        /// <summary>
-        /// A safer way to get all the files in a directory and sub directory without crashing on UnauthorizedException or PathTooLongException
-        /// </summary>
-        /// <param name="rootPath">Starting directory</param>
-        /// <param name="patternMatch">Filename pattern match</param>
-        /// <param name="searchOption">Search subdirectories or only top level directory for files</param>
-        /// <returns>List of files</returns>
-        public static IEnumerable<string> SaferEnumerateFiles(string path, string searchPattern = "*", SearchOption searchOption = SearchOption.TopDirectoryOnly)
-        {
-            var foundFiles = Enumerable.Empty<string>();
-
-            if (searchOption == SearchOption.AllDirectories)
-            {
-                try
-                {
-                    IEnumerable<string> subDirs = Directory.EnumerateDirectories(path);
-                    // Add files in subdirectories recursively to the list
-                    foreach (string dir in subDirs)
-                        foundFiles = foundFiles.Concat(SaferEnumerateFiles(dir, searchPattern, searchOption));
-                }
-                catch (UnauthorizedAccessException) { }
-                catch (PathTooLongException) { }
-            }
-
-            try
-            {
-                // Add files from the current directory
-                foundFiles = foundFiles.Concat(Directory.EnumerateFiles(path, searchPattern));
-            }
-            catch (UnauthorizedAccessException) { }
-
-            return foundFiles;
-        }
-    }
+			return foundFiles;
+		}
+	}
 }

Source/FileManager/LongPath.cs

@@ -0,0 +1,120 @@
+using Newtonsoft.Json;
+using System;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace FileManager
+{
+	public class LongPath
+	{
+		//https://docs.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=cmd
+
+		public const int MaxDirectoryLength = MaxPathLength - 13;
+		public const int MaxPathLength = short.MaxValue;
+		public const int MaxFilenameLength = 255;
+
+		private const int MAX_PATH = 260;
+		private const string LONG_PATH_PREFIX = "\\\\?\\";
+
+		public string Path { get; init; }
+		public override string ToString() => Path;
+
+		public static implicit operator LongPath(string path)
+		{
+			if (path is null) return null;
+
+			//File I/O functions in the Windows API convert "/" to "\" as part of converting
+			//the name to an NT-style name, except when using the "\\?\" prefix 
+			path = path.Replace(System.IO.Path.AltDirectorySeparatorChar, System.IO.Path.DirectorySeparatorChar);
+
+			if (path.StartsWith(LONG_PATH_PREFIX))
+				return new LongPath { Path = path };
+			else if ((path.Length > 2 && path[1] == ':') || path.StartsWith("UNC\\"))
+				return new LongPath { Path = LONG_PATH_PREFIX + path };
+			else if (path.StartsWith("\\\\"))
+				//The "\\?\" prefix can also be used with paths constructed according to the
+				//universal naming convention (UNC). To specify such a path using UNC, use
+				//the "\\?\UNC\" prefix.
+				return new LongPath { Path = LONG_PATH_PREFIX + "UNC\\" + path.Substring(2) };
+			else
+			{
+				//These prefixes are not used as part of the path itself. They indicate that
+				//the path should be passed to the system with minimal modification, which
+				//means that you cannot use forward slashes to represent path separators, or
+				//a period to represent the current directory, or double dots to represent the
+				//parent directory. Because you cannot use the "\\?\" prefix with a relative
+				//path, relative paths are always limited to a total of MAX_PATH characters.
+				if (path.Length > MAX_PATH)
+					throw new System.IO.PathTooLongException();
+				return new LongPath { Path = path };
+			}
+		}
+
+		public static implicit operator string(LongPath path) => path?.Path;
+
+		[JsonIgnore]
+		public string ShortPathName
+		{
+			get
+			{
+				//Short Path names are useful for navigating to the file in windows explorer,
+				//which will not recognize paths longer than MAX_PATH. Short path names are not
+				//always enabled on every volume. So to check if a volume enables short path
+				//names (aka 8dot3 names), run the following command from an elevated command
+				//prompt:
+				//
+				//	fsutil 8dot3name query c:
+				//
+				//It will say:
+				//
+				//	"Based on the above settings, 8dot3 name creation is [enabled/disabled] on c:"
+				//
+				//To enable short names on a volume on the system, run the following command
+				//from an elevated command prompt:
+				//
+				//	fsutil 8dot3name set c: 0
+				//
+				//or for all volumes on the system:
+				//
+				//	fsutil 8dot3name set 0
+				//
+				//Note that after enabling 8dot3 names on a volume, they will only be available
+				//for newly-created entries in ther file system. Existing entries made while
+				//8dot3 names were disabled will not be reachable by short paths.
+
+				if (Path is null) return null;
+
+				StringBuilder shortPathBuffer = new(MaxPathLength);
+				GetShortPathName(Path, shortPathBuffer, MaxPathLength);
+				return shortPathBuffer.ToString();
+			}
+		}
+
+		[JsonIgnore]
+		public string LongPathName
+		{
+			get
+			{
+				if (Path is null) return null;
+
+				StringBuilder longPathBuffer = new(MaxPathLength);
+				GetLongPathName(Path, longPathBuffer, MaxPathLength);
+				return longPathBuffer.ToString();
+			}
+		}
+
+		[JsonIgnore]
+		public string PathWithoutPrefix
+			=> Path?.StartsWith(LONG_PATH_PREFIX) == true ?
+			Path.Remove(0, LONG_PATH_PREFIX.Length) :
+			Path;
+
+
+		[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
+		private static extern int GetShortPathName([MarshalAs(UnmanagedType.LPWStr)] string path, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder shortPath, int shortPathLength);
+
+		[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
+		private static extern int GetLongPathName([MarshalAs(UnmanagedType.LPWStr)] string lpszShortPath, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder lpszLongPath, int cchBuffer);
+	}
+}

Source/FileManager/MetadataNamingTemplate.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Linq;
+
+namespace FileManager
+{
+	public class MetadataNamingTemplate : NamingTemplate
+	{
+		public MetadataNamingTemplate(string template) : base(template) { }
+
+		public string GetTagContents()
+		{
+			var tagValue = Template;
+
+			foreach (var r in ParameterReplacements)
+				tagValue = tagValue.Replace($"<{formatKey(r.Key)}>", r.Value?.ToString() ?? "");
+
+			return tagValue;
+		}
+	}
+}

Source/FileManager/NamingTemplate.cs

@@ -0,0 +1,28 @@
+using Dinah.Core;
+using System;
+using System.Collections.Generic;
+
+namespace FileManager
+{
+	public class NamingTemplate
+	{
+		/// <summary>Proposed full name. May contain optional html-styled template tags. Eg: &lt;name&gt;</summary>
+		public string Template { get; }
+
+		/// <param name="template">Proposed file name with optional html-styled template tags.</param>
+		public NamingTemplate(string template) => Template = ArgumentValidator.EnsureNotNullOrWhiteSpace(template, nameof(template));
+
+		/// <summary>Optional step 1: Replace html-styled template tags with parameters. Eg {"name", "Bill Gates"} => /&lt;name&gt;/ => /Bill Gates/</summary>
+		public Dictionary<string, object> ParameterReplacements { get; } = new Dictionary<string, object>();
+
+		/// <summary>Convenience method</summary>
+		public void AddParameterReplacement(string key, object value)
+			// using .Add() instead of "[key] = value" will make unintended overwriting throw exception
+			=> ParameterReplacements.Add(key, value);
+
+		protected static string formatKey(string key)
+			=> key
+			.Replace("<", "")
+			.Replace(">", "");
+	}
+}

Source/FileManager/ReplacementCharacters.cs

@@ -0,0 +1,271 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace FileManager
+{
+	public class Replacement
+	{
+		public const int FIXED_COUNT = 6;
+
+		internal const char QUOTE_MARK = '"';
+		[JsonIgnore] public bool Mandatory { get; internal set; }
+		[JsonProperty] public char CharacterToReplace { get; private set; }
+		[JsonProperty] public string ReplacementString { get; private set; }
+		[JsonProperty] public string Description { get; private set; }
+		public override string ToString() => $"{CharacterToReplace} → {ReplacementString} ({Description})";
+
+		public Replacement(char charToReplace, string replacementString, string description)
+		{
+			CharacterToReplace = charToReplace;
+			ReplacementString = replacementString;
+			Description = description;
+		}
+		private Replacement(char charToReplace, string replacementString, string description, bool mandatory)
+			: this(charToReplace, replacementString, description)
+		{
+			Mandatory = mandatory;
+		}
+
+		public void Update(char charToReplace, string replacementString, string description)
+		{
+			ReplacementString = replacementString;
+
+			if (!Mandatory)
+			{
+				CharacterToReplace = charToReplace;
+				Description = description;
+			}
+		}
+
+		public static Replacement OtherInvalid(string replacement) => new(default, replacement, "All other invalid characters", true);
+		public static Replacement FilenameForwardSlash(string replacement) => new('/', replacement, "Forward Slash (Filename Only)", true);
+		public static Replacement FilenameBackSlash(string replacement) => new('\\', replacement, "Back Slash (Filename Only)", true);
+		public static Replacement OpenQuote(string replacement) => new('"', replacement, "Open Quote", true);
+		public static Replacement CloseQuote(string replacement) => new('"', replacement, "Close Quote", true);
+		public static Replacement OtherQuote(string replacement) => new('"', replacement, "Other Quote", true);
+		public static Replacement Colon(string replacement) => new(':', replacement, "Colon");
+		public static Replacement Asterisk(string replacement) => new('*', replacement, "Asterisk");
+		public static Replacement QuestionMark(string replacement) => new('?', replacement, "Question Mark");
+		public static Replacement OpenAngleBracket(string replacement) => new('<', replacement, "Open Angle Bracket");
+		public static Replacement CloseAngleBracket(string replacement) => new('>', replacement, "Close Angle Bracket");
+		public static Replacement Pipe(string replacement) => new('|', replacement, "Vertical Line");
+	}
+
+	[JsonConverter(typeof(ReplacementCharactersConverter))]
+	public class ReplacementCharacters
+	{
+		public static readonly ReplacementCharacters Default = new()
+		{
+			Replacements = new List<Replacement>()
+			{
+				Replacement.OtherInvalid("_"),
+				Replacement.FilenameForwardSlash("∕"),
+				Replacement.FilenameBackSlash(""),
+				Replacement.OpenQuote("“"),
+				Replacement.CloseQuote("”"),
+				Replacement.OtherQuote("＂"),
+				Replacement.OpenAngleBracket("＜"),
+				Replacement.CloseAngleBracket("＞"),
+				Replacement.Colon("꞉"),
+				Replacement.Asterisk("✱"),
+				Replacement.QuestionMark("？"),
+				Replacement.Pipe("⏐"),
+			}
+		};
+
+		public static readonly ReplacementCharacters LoFiDefault = new()
+		{
+			Replacements = new List<Replacement>()
+			{
+				Replacement.OtherInvalid("_"),
+				Replacement.FilenameForwardSlash("_"),
+				Replacement.FilenameBackSlash("_"),
+				Replacement.OpenQuote("'"),
+				Replacement.CloseQuote("'"),
+				Replacement.OtherQuote("'"),
+				Replacement.OpenAngleBracket("{"),
+				Replacement.CloseAngleBracket("}"),
+				Replacement.Colon("-"),
+			}
+		};
+
+		public static readonly ReplacementCharacters Barebones = new()
+		{
+			Replacements = new List<Replacement>()
+			{
+				Replacement.OtherInvalid("_"),
+				Replacement.FilenameForwardSlash("_"),
+				Replacement.FilenameBackSlash("_"),
+				Replacement.OpenQuote("_"),
+				Replacement.CloseQuote("_"),
+				Replacement.OtherQuote("_"),
+			}
+		};
+
+		private static readonly char[] invalidChars = Path.GetInvalidPathChars().Union(new[] {
+				'*', '?', ':',
+				// these are weird. If you run Path.GetInvalidPathChars() in Visual Studio's "C# Interactive", then these characters are included.
+				// In live code, Path.GetInvalidPathChars() does not include them
+				'"', '<', '>'
+			}).ToArray();
+
+		public IReadOnlyList<Replacement> Replacements { get; init; }
+		private string DefaultReplacement => Replacements[0].ReplacementString;
+		private Replacement ForwardSlash => Replacements[1];
+		private Replacement BackSlash => Replacements[2];
+		private string OpenQuote => Replacements[3].ReplacementString;
+		private string CloseQuote => Replacements[4].ReplacementString;
+		private string OtherQuote => Replacements[5].ReplacementString;
+
+		private string GetFilenameCharReplacement(char toReplace, char preceding, char succeding)
+		{
+			if (toReplace == ForwardSlash.CharacterToReplace)
+				return ForwardSlash.ReplacementString;
+			else if (toReplace == BackSlash.CharacterToReplace)
+				return BackSlash.ReplacementString;
+			else return GetPathCharReplacement(toReplace, preceding, succeding);
+		}
+		private string GetPathCharReplacement(char toReplace, char preceding, char succeding)
+		{
+			if (toReplace == Replacement.QUOTE_MARK)
+			{
+				if (preceding == default ||
+						(preceding != default
+						&& !char.IsLetter(preceding)
+						&& !char.IsNumber(preceding)
+						&& (char.IsLetter(succeding) || char.IsNumber(succeding))
+						)
+					)
+					return OpenQuote;
+				else if (succeding == default ||
+							(succeding != default
+							&& !char.IsLetter(succeding)
+							&& !char.IsNumber(succeding)
+							&& (char.IsLetter(preceding) || char.IsNumber(preceding))
+							)
+						)
+					return CloseQuote;
+				else
+					return OtherQuote;
+			}
+
+			for (int i = Replacement.FIXED_COUNT; i < Replacements.Count; i++)
+			{
+				var r = Replacements[i];
+				if (r.CharacterToReplace == toReplace)
+					return r.ReplacementString;
+			}
+			return DefaultReplacement;
+		}
+
+
+		public static bool ContainsInvalid(string path)
+			=> path.Any(c => invalidChars.Contains(c));
+
+		public string ReplaceInvalidFilenameChars(string fileName)
+		{
+			if (string.IsNullOrEmpty(fileName)) return string.Empty;
+			var builder = new System.Text.StringBuilder();
+			for (var i = 0; i < fileName.Length; i++)
+			{
+				var c = fileName[i];
+
+				if (invalidChars.Contains(c) || c == ForwardSlash.CharacterToReplace || c == BackSlash.CharacterToReplace)
+				{
+					char preceding = i > 0 ? fileName[i - 1] : default;
+					char succeeding = i < fileName.Length - 1 ? fileName[i + 1] : default;
+					builder.Append(GetFilenameCharReplacement(c, preceding, succeeding));
+				}
+				else
+					builder.Append(c);
+
+			}
+			return builder.ToString();
+		}
+
+		public string ReplaceInvalidPathChars(string pathStr)
+		{
+			if (string.IsNullOrEmpty(pathStr)) return string.Empty;
+
+			// replace all colons except within the first 2 chars
+			var builder = new System.Text.StringBuilder();
+			for (var i = 0; i < pathStr.Length; i++)
+			{
+				var c = pathStr[i];
+
+				if (!invalidChars.Contains(c) || (c == ':' && i == 1 && Path.IsPathRooted(pathStr)))
+					builder.Append(c);
+				else
+				{
+					char preceding = i > 0 ? pathStr[i - 1] : default;
+					char succeeding = i < pathStr.Length - 1 ? pathStr[i + 1] : default;
+					builder.Append(GetPathCharReplacement(c, preceding, succeeding));
+				}
+
+			}
+			return builder.ToString();
+		}
+	}
+
+	#region JSON Converter
+	internal class ReplacementCharactersConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+			=> objectType == typeof(ReplacementCharacters);
+
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			var jObj = JObject.Load(reader);
+			var replaceArr = jObj[nameof(Replacement)];
+			IReadOnlyList<Replacement> dict = replaceArr
+				.ToObject<Replacement[]>().ToList();
+
+			//Ensure that the first 6 replacements are for the expected chars and that all replacement strings are valid.
+			//If not, reset to default.
+
+			var default0 = Replacement.OtherInvalid("");
+			var default1 = Replacement.FilenameForwardSlash("");
+			var default2 = Replacement.FilenameBackSlash("");
+			var default3 = Replacement.OpenQuote("");
+			var default4 = Replacement.CloseQuote("");
+			var default5 = Replacement.OtherQuote("");
+
+			if (dict.Count < Replacement.FIXED_COUNT ||
+				dict[0].CharacterToReplace != default0.CharacterToReplace || dict[0].Description != default0.Description ||
+				dict[1].CharacterToReplace != default1.CharacterToReplace || dict[1].Description != default1.Description ||
+				dict[2].CharacterToReplace != default2.CharacterToReplace || dict[2].Description != default2.Description ||
+				dict[3].CharacterToReplace != default3.CharacterToReplace || dict[3].Description != default3.Description ||
+				dict[4].CharacterToReplace != default4.CharacterToReplace || dict[4].Description != default4.Description ||
+				dict[5].CharacterToReplace != default5.CharacterToReplace || dict[5].Description != default5.Description ||
+				dict.Any(r => ReplacementCharacters.ContainsInvalid(r.ReplacementString))
+				)
+			{
+				dict = ReplacementCharacters.Default.Replacements;
+			}
+			//First FIXED_COUNT are mandatory
+			for (int i = 0; i < Replacement.FIXED_COUNT; i++)
+				dict[i].Mandatory = true;
+
+			return new ReplacementCharacters { Replacements = dict };
+		}
+
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			ReplacementCharacters replacements = (ReplacementCharacters)value;
+
+			var propertyNames = replacements.Replacements
+				.Select(c => JObject.FromObject(c)).ToList();
+
+			var prop = new JProperty(nameof(Replacement), new JArray(propertyNames));
+
+			var obj = new JObject();
+			obj.AddFirst(prop);
+			obj.WriteTo(writer);
+		}
+	}
+	#endregion
+}

Source/LibationFileManager/AudibleFileStorage.cs

@@ -9,18 +9,19 @@ namespace LibationFileManager
 {
     public abstract class AudibleFileStorage
     {
-        protected abstract string GetFilePathCustom(string productId);
+        protected abstract LongPath GetFilePathCustom(string productId);
+        protected abstract List<LongPath> GetFilePathsCustom(string productId);
 
         #region static
-        public static string DownloadsInProgressDirectory => Directory.CreateDirectory(Path.Combine(Configuration.Instance.InProgress, "DownloadsInProgress")).FullName;
-        public static string DecryptInProgressDirectory => Directory.CreateDirectory(Path.Combine(Configuration.Instance.InProgress, "DecryptInProgress")).FullName;
+        public static LongPath DownloadsInProgressDirectory => Directory.CreateDirectory(Path.Combine(Configuration.Instance.InProgress, "DownloadsInProgress")).FullName;
+        public static LongPath DecryptInProgressDirectory => Directory.CreateDirectory(Path.Combine(Configuration.Instance.InProgress, "DecryptInProgress")).FullName;
 
         private static AaxcFileStorage AAXC { get; } = new AaxcFileStorage();
         public static bool AaxcExists(string productId) => AAXC.Exists(productId);
 
         public static AudioFileStorage Audio { get; } = new AudioFileStorage();
 
-        public static string BooksDirectory
+        public static LongPath BooksDirectory
         {
             get
             {
@@ -43,7 +44,7 @@ namespace LibationFileManager
             regexTemplate = $@"{{0}}.*?\.({extAggr})$";
         }
 
-        protected string GetFilePath(string productId)
+        protected LongPath GetFilePath(string productId)
         {
             // primary lookup
             var cachedFile = FilePathCache.GetFirstPath(productId, FileType);
@@ -58,6 +59,9 @@ namespace LibationFileManager
             return firstOrNull;
         }
 
+        public List<LongPath> GetPaths(string productId)
+            => GetFilePathsCustom(productId);
+
         protected Regex GetBookSearchRegex(string productId)
         {
             var pattern = string.Format(regexTemplate, productId);
@@ -70,12 +74,15 @@ namespace LibationFileManager
     {
         internal AaxcFileStorage() : base(FileType.AAXC) { }
 
-        protected override string GetFilePathCustom(string productId)
+        protected override LongPath GetFilePathCustom(string productId)
+            => GetFilePathsCustom(productId).FirstOrDefault();
+
+        protected override List<LongPath> GetFilePathsCustom(string productId)
         {
             var regex = GetBookSearchRegex(productId);
             return FileUtility
                 .SaferEnumerateFiles(DownloadsInProgressDirectory, "*.*", SearchOption.AllDirectories)
-                .FirstOrDefault(s => regex.IsMatch(s));
+                .Where(s => regex.IsMatch(s)).ToList();
         }
 
         public bool Exists(string productId) => GetFilePath(productId) is not null;
@@ -88,7 +95,11 @@ namespace LibationFileManager
 
         private static BackgroundFileSystem BookDirectoryFiles { get; set; }
         private static object bookDirectoryFilesLocker { get; } = new();
-        protected override string GetFilePathCustom(string productId)
+
+        protected override LongPath GetFilePathCustom(string productId)
+            => GetFilePathsCustom(productId).FirstOrDefault();
+
+        protected override List<LongPath> GetFilePathsCustom(string productId)
         {
             // If user changed the BooksDirectory: reinitialize
             lock (bookDirectoryFilesLocker)
@@ -96,11 +107,12 @@ namespace LibationFileManager
                     BookDirectoryFiles = new BackgroundFileSystem(BooksDirectory, "*.*", SearchOption.AllDirectories);
 
             var regex = GetBookSearchRegex(productId);
-            return BookDirectoryFiles.FindFile(regex);
+            return BookDirectoryFiles.FindFiles(regex);
         }
 
         public void Refresh() => BookDirectoryFiles.RefreshFiles();
 
-        public string GetPath(string productId) => GetFilePath(productId);
-    }
+        public LongPath GetPath(string productId) => GetFilePath(productId);
+
+	}
 }

Source/LibationFileManager/Configuration.cs

@@ -14,514 +14,528 @@ using Serilog.Events;
 
 namespace LibationFileManager
 {
-    public class Configuration
-    {
-        public bool LibationSettingsAreValid
-            => File.Exists(APPSETTINGS_JSON)
-            && SettingsFileIsValid(SettingsFilePath);
+	public class Configuration
+	{
+		public bool LibationSettingsAreValid
+			=> File.Exists(APPSETTINGS_JSON)
+			&& SettingsFileIsValid(SettingsFilePath);
 
-        public static bool SettingsFileIsValid(string settingsFile)
-        {
-            if (!Directory.Exists(Path.GetDirectoryName(settingsFile)) || !File.Exists(settingsFile))
-                return false;
+		public static bool SettingsFileIsValid(string settingsFile)
+		{
+			if (!Directory.Exists(Path.GetDirectoryName(settingsFile)) || !File.Exists(settingsFile))
+				return false;
 
-            var pDic = new PersistentDictionary(settingsFile, isReadOnly: true);
+			var pDic = new PersistentDictionary(settingsFile, isReadOnly: true);
 
-            var booksDir = pDic.GetString(nameof(Books));
-            if (booksDir is null || !Directory.Exists(booksDir))
-                return false;
+			var booksDir = pDic.GetString(nameof(Books));
+			if (booksDir is null || !Directory.Exists(booksDir))
+				return false;
 
-            if (string.IsNullOrWhiteSpace(pDic.GetString(nameof(InProgress))))
-                return false;
+			if (string.IsNullOrWhiteSpace(pDic.GetString(nameof(InProgress))))
+				return false;
 
-            return true;
-        }
-
-        #region persistent configuration settings/values
-
-        // note: any potential file manager static ctors can't compensate if storage dir is changed at run time via settings. this is partly bad architecture. but the side effect is desirable. if changing LibationFiles location: restart app
-
-        // default setting and directory creation occur in class responsible for files.
-        // config class is only responsible for path. not responsible for setting defaults, dir validation, or dir creation
-        // exceptions: appsettings.json, LibationFiles dir, Settings.json
-
-        private PersistentDictionary persistentDictionary;
-
-        public T GetNonString<T>(string propertyName) => persistentDictionary.GetNonString<T>(propertyName);
-        public object GetObject(string propertyName) => persistentDictionary.GetObject(propertyName);
-        public void SetObject(string propertyName, object newValue) => persistentDictionary.SetNonString(propertyName, newValue);
-
-        /// <summary>WILL ONLY set if already present. WILL NOT create new</summary>
-        public void SetWithJsonPath(string jsonPath, string propertyName, string newValue, bool suppressLogging = false)
-        {
-            var settingWasChanged = persistentDictionary.SetWithJsonPath(jsonPath, propertyName, newValue, suppressLogging);
-            if (settingWasChanged)
-                configuration?.Reload();
-        }
-
-        public string SettingsFilePath => Path.Combine(LibationFiles, "Settings.json");
-
-        public static string GetDescription(string propertyName)
-        {
-            var attribute = typeof(Configuration)
-                .GetProperty(propertyName)
-                ?.GetCustomAttributes(typeof(DescriptionAttribute), true)
-                .SingleOrDefault()
-                as DescriptionAttribute;
-
-            return attribute?.Description;
-        }
-
-        public bool Exists(string propertyName) => persistentDictionary.Exists(propertyName);       
-
-        [Description("Location for book storage. Includes destination of newly liberated books")]
-        public string Books
-        {
-            get => persistentDictionary.GetString(nameof(Books));
-            set => persistentDictionary.SetString(nameof(Books), value);
-        }
-
-        // temp/working dir(s) should be outside of dropbox
-        [Description("Temporary location of files while they're in process of being downloaded and decrypted.\r\nWhen decryption is complete, the final file will be in Books location\r\nRecommend not using a folder which is backed up real time. Eg: Dropbox, iCloud, Google Drive")]
-        public string InProgress
-        {
-            get => persistentDictionary.GetString(nameof(InProgress));
-            set => persistentDictionary.SetString(nameof(InProgress), value);
-        }
-
-        [Description("Allow Libation to fix up audiobook metadata")]
-        public bool AllowLibationFixup
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(AllowLibationFixup));
-            set => persistentDictionary.SetNonString(nameof(AllowLibationFixup), value);
-        }
-
-        [Description("Create a cue sheet (.cue)")]
-        public bool CreateCueSheet
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(CreateCueSheet));
-            set => persistentDictionary.SetNonString(nameof(CreateCueSheet), value);
-        }
-
-        [Description("Retain the Aax file after successfully decrypting")]
-        public bool RetainAaxFile
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(RetainAaxFile));
-            set => persistentDictionary.SetNonString(nameof(RetainAaxFile), value);
-        }
-
-        [Description("Split my books into multiple files by chapter")]
-        public bool SplitFilesByChapter
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(SplitFilesByChapter));
-            set => persistentDictionary.SetNonString(nameof(SplitFilesByChapter), value);
-        }
-
-        [Description("Strip \"(Unabridged)\" from audiobook metadata tags")]
-        public bool StripUnabridged
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(StripUnabridged));
-            set => persistentDictionary.SetNonString(nameof(StripUnabridged), value);
-        }
-
-        [Description("Allow Libation to remove audible branding from the start\r\nand end of audiobooks. (e.g. \"This is Audible\")")]
-        public bool StripAudibleBrandAudio
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(StripAudibleBrandAudio));
-            set => persistentDictionary.SetNonString(nameof(StripAudibleBrandAudio), value);
-        }
-
-        [Description("Decrypt to lossy format?")]
-        public bool DecryptToLossy
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(DecryptToLossy));
-            set => persistentDictionary.SetNonString(nameof(DecryptToLossy), value);
-        }
-
-        [Description("Lame encoder target. true = Bitrate, false = Quality")]
-        public bool LameTargetBitrate
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(LameTargetBitrate));
-            set => persistentDictionary.SetNonString(nameof(LameTargetBitrate), value);
-        }
-
-        [Description("Lame encoder downsamples to mono")]
-        public bool LameDownsampleMono
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(LameDownsampleMono));
-            set => persistentDictionary.SetNonString(nameof(LameDownsampleMono), value);
-        }
-
-        [Description("Lame target bitrate [16,320]")]
-        public int LameBitrate
-        {
-            get => persistentDictionary.GetNonString<int>(nameof(LameBitrate));
-            set => persistentDictionary.SetNonString(nameof(LameBitrate), value);
-        }
-
-        [Description("Restrict encoder to constant bitrate?")]
-        public bool LameConstantBitrate
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(LameConstantBitrate));
-            set => persistentDictionary.SetNonString(nameof(LameConstantBitrate), value);
-        }
-
-        [Description("Match the source bitrate?")]
-        public bool LameMatchSourceBR
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(LameMatchSourceBR));
-            set => persistentDictionary.SetNonString(nameof(LameMatchSourceBR), value);
-        }
-
-        [Description("Lame target VBR quality [10,100]")]
-        public int LameVBRQuality
-        {
-            get => persistentDictionary.GetNonString<int>(nameof(LameVBRQuality));
-            set => persistentDictionary.SetNonString(nameof(LameVBRQuality), value);
-        }
-        
-        [Description("A Dictionary of GridView data property names and bool indicating its column's visibility in ProductsGrid")]
-        public Dictionary<string, bool> GridColumnsVisibilities
-        {
-            get => persistentDictionary.GetNonString<Dictionary<string, bool>>(nameof(GridColumnsVisibilities));
-            set => persistentDictionary.SetNonString(nameof(GridColumnsVisibilities), value);
-        }
-
-        [Description("A Dictionary of GridView data property names and int indicating its column's display index in ProductsGrid")]
-        public Dictionary<string, int> GridColumnsDisplayIndices
-        {
-            get => persistentDictionary.GetNonString<Dictionary<string,int>>(nameof(GridColumnsDisplayIndices));
-            set => persistentDictionary.SetNonString(nameof(GridColumnsDisplayIndices), value);
-        }
-
-        [Description("A Dictionary of GridView data property names and int indicating its column's width in ProductsGrid")]
-        public Dictionary<string, int> GridColumnsWidths
-        {
-            get => persistentDictionary.GetNonString<Dictionary<string,int>>(nameof(GridColumnsWidths));
-            set => persistentDictionary.SetNonString(nameof(GridColumnsWidths), value);
-        }
-        
-        [Description("Save cover image alongside audiobook?")]
-        public bool DownloadCoverArt
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(DownloadCoverArt));
-            set => persistentDictionary.SetNonString(nameof(DownloadCoverArt), value);
-        }
-
-        public enum BadBookAction
-        {
-            [Description("Ask each time what action to take.")]
-            Ask = 0,
-            [Description("Stop processing books.")]
-            Abort = 1,
-            [Description("Retry book later. Skip for now. Continue processing books.")]
-            Retry = 2,
-            [Description("Permanently ignore book. Continue processing books. Do not try book again.")]
-            Ignore = 3
-        }
-
-        [Description("When liberating books and there is an error, Libation should:")]
-        public BadBookAction BadBook
-        {
-            get
-            {
-                var badBookStr = persistentDictionary.GetString(nameof(BadBook));
-				return Enum.TryParse<BadBookAction>(badBookStr, out var badBookEnum) ? badBookEnum : BadBookAction.Ask;
-            }
-            set => persistentDictionary.SetString(nameof(BadBook), value.ToString());
-        }
-
-        [Description("Show number of newly imported titles? When unchecked, no pop-up will appear after library scan.")]
-        public bool ShowImportedStats
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(ShowImportedStats));
-            set => persistentDictionary.SetNonString(nameof(ShowImportedStats), value);
-        }
-
-        [Description("Import episodes? (eg: podcasts) When unchecked, episodes will not be imported into Libation.")]
-        public bool ImportEpisodes
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(ImportEpisodes));
-            set => persistentDictionary.SetNonString(nameof(ImportEpisodes), value);
-        }
-
-        [Description("Download episodes? (eg: podcasts). When unchecked, episodes already in Libation will not be downloaded.")]
-        public bool DownloadEpisodes
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(DownloadEpisodes));
-            set => persistentDictionary.SetNonString(nameof(DownloadEpisodes), value);
+			return true;
 		}
 
-        public event EventHandler AutoScanChanged;
+		#region persistent configuration settings/values
 
-        [Description("Automatically run periodic scans in the background?")]
-        public bool AutoScan
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(AutoScan));
-            set
-            {
-                if (AutoScan != value)
-                {
-                    persistentDictionary.SetNonString(nameof(AutoScan), value);
-                    AutoScanChanged?.Invoke(null, null);
-                }
-            }
-        }
+		// note: any potential file manager static ctors can't compensate if storage dir is changed at run time via settings. this is partly bad architecture. but the side effect is desirable. if changing LibationFiles location: restart app
 
-        [Description("Auto download episodes? After scan, download new books in 'checked' accounts.")]
-        public bool AutoDownloadEpisodes
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(AutoDownloadEpisodes));
-            set => persistentDictionary.SetNonString(nameof(AutoDownloadEpisodes), value);
-        }
+		// default setting and directory creation occur in class responsible for files.
+		// config class is only responsible for path. not responsible for setting defaults, dir validation, or dir creation
+		// exceptions: appsettings.json, LibationFiles dir, Settings.json
 
-        [Description("Save all podcast episodes in a series to the series parent folder?")]
-        public bool SavePodcastsToParentFolder
-        {
-            get => persistentDictionary.GetNonString<bool>(nameof(SavePodcastsToParentFolder));
-            set => persistentDictionary.SetNonString(nameof(SavePodcastsToParentFolder), value);
-        }
+		private PersistentDictionary persistentDictionary;
 
-        #region templates: custom file naming
+		public T GetNonString<T>(string propertyName) => persistentDictionary.GetNonString<T>(propertyName);
+		public object GetObject(string propertyName) => persistentDictionary.GetObject(propertyName);
+		public void SetObject(string propertyName, object newValue) => persistentDictionary.SetNonString(propertyName, newValue);
 
-        [Description("How to format the folders in which files will be saved")]
+		/// <summary>WILL ONLY set if already present. WILL NOT create new</summary>
+		public void SetWithJsonPath(string jsonPath, string propertyName, string newValue, bool suppressLogging = false)
+		{
+			var settingWasChanged = persistentDictionary.SetWithJsonPath(jsonPath, propertyName, newValue, suppressLogging);
+			if (settingWasChanged)
+				configuration?.Reload();
+		}
+
+		public string SettingsFilePath => Path.Combine(LibationFiles, "Settings.json");
+
+		public static string GetDescription(string propertyName)
+		{
+			var attribute = typeof(Configuration)
+				.GetProperty(propertyName)
+				?.GetCustomAttributes(typeof(DescriptionAttribute), true)
+				.SingleOrDefault()
+				as DescriptionAttribute;
+
+			return attribute?.Description;
+		}
+
+		public bool Exists(string propertyName) => persistentDictionary.Exists(propertyName);       
+
+		[Description("Location for book storage. Includes destination of newly liberated books")]
+		public string Books
+		{
+			get => persistentDictionary.GetString(nameof(Books));
+			set => persistentDictionary.SetString(nameof(Books), value);
+		}
+
+		// temp/working dir(s) should be outside of dropbox
+		[Description("Temporary location of files while they're in process of being downloaded and decrypted.\r\nWhen decryption is complete, the final file will be in Books location\r\nRecommend not using a folder which is backed up real time. Eg: Dropbox, iCloud, Google Drive")]
+		public string InProgress
+		{
+			get => persistentDictionary.GetString(nameof(InProgress));
+			set => persistentDictionary.SetString(nameof(InProgress), value);
+		}
+
+		[Description("Allow Libation to fix up audiobook metadata")]
+		public bool AllowLibationFixup
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(AllowLibationFixup));
+			set => persistentDictionary.SetNonString(nameof(AllowLibationFixup), value);
+		}
+
+		[Description("Create a cue sheet (.cue)")]
+		public bool CreateCueSheet
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(CreateCueSheet));
+			set => persistentDictionary.SetNonString(nameof(CreateCueSheet), value);
+		}
+
+		[Description("Retain the Aax file after successfully decrypting")]
+		public bool RetainAaxFile
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(RetainAaxFile));
+			set => persistentDictionary.SetNonString(nameof(RetainAaxFile), value);
+		}
+
+		[Description("Split my books into multiple files by chapter")]
+		public bool SplitFilesByChapter
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(SplitFilesByChapter));
+			set => persistentDictionary.SetNonString(nameof(SplitFilesByChapter), value);
+		}
+
+		[Description("Strip \"(Unabridged)\" from audiobook metadata tags")]
+		public bool StripUnabridged
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(StripUnabridged));
+			set => persistentDictionary.SetNonString(nameof(StripUnabridged), value);
+		}
+
+		[Description("Strip audible branding from the start and end of audiobooks.\r\n(e.g. \"This is Audible\")")]
+		public bool StripAudibleBrandAudio
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(StripAudibleBrandAudio));
+			set => persistentDictionary.SetNonString(nameof(StripAudibleBrandAudio), value);
+		}
+
+		[Description("Decrypt to lossy format?")]
+		public bool DecryptToLossy
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(DecryptToLossy));
+			set => persistentDictionary.SetNonString(nameof(DecryptToLossy), value);
+		}
+
+		[Description("Lame encoder target. true = Bitrate, false = Quality")]
+		public bool LameTargetBitrate
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(LameTargetBitrate));
+			set => persistentDictionary.SetNonString(nameof(LameTargetBitrate), value);
+		}
+
+		[Description("Lame encoder downsamples to mono")]
+		public bool LameDownsampleMono
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(LameDownsampleMono));
+			set => persistentDictionary.SetNonString(nameof(LameDownsampleMono), value);
+		}
+
+		[Description("Lame target bitrate [16,320]")]
+		public int LameBitrate
+		{
+			get => persistentDictionary.GetNonString<int>(nameof(LameBitrate));
+			set => persistentDictionary.SetNonString(nameof(LameBitrate), value);
+		}
+
+		[Description("Restrict encoder to constant bitrate?")]
+		public bool LameConstantBitrate
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(LameConstantBitrate));
+			set => persistentDictionary.SetNonString(nameof(LameConstantBitrate), value);
+		}
+
+		[Description("Match the source bitrate?")]
+		public bool LameMatchSourceBR
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(LameMatchSourceBR));
+			set => persistentDictionary.SetNonString(nameof(LameMatchSourceBR), value);
+		}
+
+		[Description("Lame target VBR quality [10,100]")]
+		public int LameVBRQuality
+		{
+			get => persistentDictionary.GetNonString<int>(nameof(LameVBRQuality));
+			set => persistentDictionary.SetNonString(nameof(LameVBRQuality), value);
+		}
+		
+		[Description("A Dictionary of GridView data property names and bool indicating its column's visibility in ProductsGrid")]
+		public Dictionary<string, bool> GridColumnsVisibilities
+		{
+			get => persistentDictionary.GetNonString<Dictionary<string, bool>>(nameof(GridColumnsVisibilities));
+			set => persistentDictionary.SetNonString(nameof(GridColumnsVisibilities), value);
+		}
+
+		[Description("A Dictionary of GridView data property names and int indicating its column's display index in ProductsGrid")]
+		public Dictionary<string, int> GridColumnsDisplayIndices
+		{
+			get => persistentDictionary.GetNonString<Dictionary<string,int>>(nameof(GridColumnsDisplayIndices));
+			set => persistentDictionary.SetNonString(nameof(GridColumnsDisplayIndices), value);
+		}
+
+		[Description("A Dictionary of GridView data property names and int indicating its column's width in ProductsGrid")]
+		public Dictionary<string, int> GridColumnsWidths
+		{
+			get => persistentDictionary.GetNonString<Dictionary<string,int>>(nameof(GridColumnsWidths));
+			set => persistentDictionary.SetNonString(nameof(GridColumnsWidths), value);
+		}
+		
+		[Description("Save cover image alongside audiobook?")]
+		public bool DownloadCoverArt
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(DownloadCoverArt));
+			set => persistentDictionary.SetNonString(nameof(DownloadCoverArt), value);
+		}
+
+		public enum BadBookAction
+		{
+			[Description("Ask each time what action to take.")]
+			Ask = 0,
+			[Description("Stop processing books.")]
+			Abort = 1,
+			[Description("Retry book later. Skip for now. Continue processing books.")]
+			Retry = 2,
+			[Description("Permanently ignore book. Continue processing books. Do not try book again.")]
+			Ignore = 3
+		}
+
+		[Description("When liberating books and there is an error, Libation should:")]
+		public BadBookAction BadBook
+		{
+			get
+			{
+				var badBookStr = persistentDictionary.GetString(nameof(BadBook));
+				return Enum.TryParse<BadBookAction>(badBookStr, out var badBookEnum) ? badBookEnum : BadBookAction.Ask;
+			}
+			set => persistentDictionary.SetString(nameof(BadBook), value.ToString());
+		}
+
+		[Description("Show number of newly imported titles? When unchecked, no pop-up will appear after library scan.")]
+		public bool ShowImportedStats
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(ShowImportedStats));
+			set => persistentDictionary.SetNonString(nameof(ShowImportedStats), value);
+		}
+
+		[Description("Import episodes? (eg: podcasts) When unchecked, episodes will not be imported into Libation.")]
+		public bool ImportEpisodes
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(ImportEpisodes));
+			set => persistentDictionary.SetNonString(nameof(ImportEpisodes), value);
+		}
+
+		[Description("Download episodes? (eg: podcasts). When unchecked, episodes already in Libation will not be downloaded.")]
+		public bool DownloadEpisodes
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(DownloadEpisodes));
+			set => persistentDictionary.SetNonString(nameof(DownloadEpisodes), value);
+		}
+
+		public event EventHandler AutoScanChanged;
+
+		[Description("Automatically run periodic scans in the background?")]
+		public bool AutoScan
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(AutoScan));
+			set
+			{
+				if (AutoScan != value)
+				{
+					persistentDictionary.SetNonString(nameof(AutoScan), value);
+					AutoScanChanged?.Invoke(null, null);
+				}
+			}
+		}
+
+		[Description("Auto download episodes? After scan, download new books in 'checked' accounts.")]
+		public bool AutoDownloadEpisodes
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(AutoDownloadEpisodes));
+			set => persistentDictionary.SetNonString(nameof(AutoDownloadEpisodes), value);
+		}
+
+		[Description("Save all podcast episodes in a series to the series parent folder?")]
+		public bool SavePodcastsToParentFolder
+		{
+			get => persistentDictionary.GetNonString<bool>(nameof(SavePodcastsToParentFolder));
+			set => persistentDictionary.SetNonString(nameof(SavePodcastsToParentFolder), value);
+		}
+
+		#region templates: custom file naming
+
+		[Description("Edit how illegal filename characters are replaced")]
+		public ReplacementCharacters ReplacementCharacters
+		{
+			get => persistentDictionary.GetNonString<ReplacementCharacters>(nameof(ReplacementCharacters));
+			set => persistentDictionary.SetNonString(nameof(ReplacementCharacters), value);
+		}
+
+		[Description("How to format the folders in which files will be saved")]
 		public string FolderTemplate
-        {
-            get => getTemplate(nameof(FolderTemplate), Templates.Folder);
-            set => setTemplate(nameof(FolderTemplate), Templates.Folder, value);
-        }
+		{
+			get => getTemplate(nameof(FolderTemplate), Templates.Folder);
+			set => setTemplate(nameof(FolderTemplate), Templates.Folder, value);
+		}
 
-        [Description("How to format the saved pdf and audio files")]
+		[Description("How to format the saved pdf and audio files")]
 		public string FileTemplate
-        {
-            get => getTemplate(nameof(FileTemplate), Templates.File);
-            set => setTemplate(nameof(FileTemplate), Templates.File, value);
-        }
+		{
+			get => getTemplate(nameof(FileTemplate), Templates.File);
+			set => setTemplate(nameof(FileTemplate), Templates.File, value);
+		}
 
-        [Description("How to format the saved audio files when split by chapters")]
-        public string ChapterFileTemplate
-        {
-            get => getTemplate(nameof(ChapterFileTemplate), Templates.ChapterFile);
-            set => setTemplate(nameof(ChapterFileTemplate), Templates.ChapterFile, value);
-        }
+		[Description("How to format the saved audio files when split by chapters")]
+		public string ChapterFileTemplate
+		{
+			get => getTemplate(nameof(ChapterFileTemplate), Templates.ChapterFile);
+			set => setTemplate(nameof(ChapterFileTemplate), Templates.ChapterFile, value);
+		}
 
-        private string getTemplate(string settingName, Templates templ) => templ.GetValid(persistentDictionary.GetString(settingName));
-        private void setTemplate(string settingName, Templates templ, string newValue)
-        {
-            var template = newValue?.Trim();
-            if (templ.IsValid(template))
-                persistentDictionary.SetString(settingName, template);
-        }
-        #endregion
+		[Description("How to format the file's Tile stored in metadata")]
+		public string ChapterTitleTemplate
+		{
+			get => getTemplate(nameof(ChapterTitleTemplate), Templates.ChapterTitle);
+			set => setTemplate(nameof(ChapterTitleTemplate), Templates.ChapterTitle, value);
+		}
 
-        #endregion
+		private string getTemplate(string settingName, Templates templ) => templ.GetValid(persistentDictionary.GetString(settingName));
+		private void setTemplate(string settingName, Templates templ, string newValue)
+		{
+			var template = newValue?.Trim();
+			if (templ.IsValid(template))
+				persistentDictionary.SetString(settingName, template);
+		}
+		#endregion
 
-        #region known directories
-        public static string AppDir_Relative => $@".\{LIBATION_FILES_KEY}";
-        public static string AppDir_Absolute => Path.GetFullPath(Path.Combine(Path.GetDirectoryName(Exe.FileLocationOnDisk), LIBATION_FILES_KEY));
-        public static string MyDocs => Path.GetFullPath(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Libation"));
-        public static string WinTemp => Path.GetFullPath(Path.Combine(Path.GetTempPath(), "Libation"));
-        public static string UserProfile => Path.GetFullPath(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Libation"));
+		#endregion
 
-        public enum KnownDirectories
-        {
-            None = 0,
+		#region known directories
+		public static string AppDir_Relative => $@".\{LIBATION_FILES_KEY}";
+		public static string AppDir_Absolute => Path.GetFullPath(Path.Combine(Path.GetDirectoryName(Exe.FileLocationOnDisk), LIBATION_FILES_KEY));
+		public static string MyDocs => Path.GetFullPath(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Libation"));
+		public static string WinTemp => Path.GetFullPath(Path.Combine(Path.GetTempPath(), "Libation"));
+		public static string UserProfile => Path.GetFullPath(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Libation"));
 
-            [Description("My Users folder")]
-            UserProfile = 1,
+		public enum KnownDirectories
+		{
+			None = 0,
 
-            [Description("The same folder that Libation is running from")]
-            AppDir = 2,
+			[Description("My Users folder")]
+			UserProfile = 1,
 
-            [Description("Windows temporary folder")]
-            WinTemp = 3,
+			[Description("The same folder that Libation is running from")]
+			AppDir = 2,
 
-            [Description("My Documents")]
-            MyDocs = 4,
+			[Description("Windows temporary folder")]
+			WinTemp = 3,
 
-            [Description("Your settings folder (aka: Libation Files)")]
-            LibationFiles = 5
-        }
-        // use func calls so we always get the latest value of LibationFiles
-        private static List<(KnownDirectories directory, Func<string> getPathFunc)> directoryOptionsPaths { get; } = new()
-        {
-            (KnownDirectories.None, () => null),
-            (KnownDirectories.UserProfile, () => UserProfile),
-            (KnownDirectories.AppDir, () => AppDir_Relative),
-            (KnownDirectories.WinTemp, () => WinTemp),
-            (KnownDirectories.MyDocs, () => MyDocs),
-            // this is important to not let very early calls try to accidentally load LibationFiles too early.
-            // also, keep this at bottom of this list
-            (KnownDirectories.LibationFiles, () => libationFilesPathCache)
-        };
-        public static string GetKnownDirectoryPath(KnownDirectories directory)
-        {
-            var dirFunc = directoryOptionsPaths.SingleOrDefault(dirFunc => dirFunc.directory == directory);
-            return dirFunc == default ? null : dirFunc.getPathFunc();
-        }
-        public static KnownDirectories GetKnownDirectory(string directory)
-        {
-            // especially important so a very early call doesn't match null => LibationFiles
-            if (string.IsNullOrWhiteSpace(directory))
-                return KnownDirectories.None;
+			[Description("My Documents")]
+			MyDocs = 4,
 
-            // 'First' instead of 'Single' because LibationFiles could match other directories. eg: default value of LibationFiles == UserProfile.
-            // since it's a list, order matters and non-LibationFiles will be returned first
-            var dirFunc = directoryOptionsPaths.FirstOrDefault(dirFunc => dirFunc.getPathFunc() == directory);
-            return dirFunc == default ? KnownDirectories.None : dirFunc.directory;
-        }
-        #endregion
+			[Description("Your settings folder (aka: Libation Files)")]
+			LibationFiles = 5
+		}
+		// use func calls so we always get the latest value of LibationFiles
+		private static List<(KnownDirectories directory, Func<string> getPathFunc)> directoryOptionsPaths { get; } = new()
+		{
+			(KnownDirectories.None, () => null),
+			(KnownDirectories.UserProfile, () => UserProfile),
+			(KnownDirectories.AppDir, () => AppDir_Relative),
+			(KnownDirectories.WinTemp, () => WinTemp),
+			(KnownDirectories.MyDocs, () => MyDocs),
+			// this is important to not let very early calls try to accidentally load LibationFiles too early.
+			// also, keep this at bottom of this list
+			(KnownDirectories.LibationFiles, () => libationFilesPathCache)
+		};
+		public static string GetKnownDirectoryPath(KnownDirectories directory)
+		{
+			var dirFunc = directoryOptionsPaths.SingleOrDefault(dirFunc => dirFunc.directory == directory);
+			return dirFunc == default ? null : dirFunc.getPathFunc();
+		}
+		public static KnownDirectories GetKnownDirectory(string directory)
+		{
+			// especially important so a very early call doesn't match null => LibationFiles
+			if (string.IsNullOrWhiteSpace(directory))
+				return KnownDirectories.None;
 
-        #region logging
-        private IConfigurationRoot configuration;
+			// 'First' instead of 'Single' because LibationFiles could match other directories. eg: default value of LibationFiles == UserProfile.
+			// since it's a list, order matters and non-LibationFiles will be returned first
+			var dirFunc = directoryOptionsPaths.FirstOrDefault(dirFunc => dirFunc.getPathFunc() == directory);
+			return dirFunc == default ? KnownDirectories.None : dirFunc.directory;
+		}
+		#endregion
 
-        public void ConfigureLogging()
-        {
-            configuration = new ConfigurationBuilder()
-                .AddJsonFile(SettingsFilePath, optional: false, reloadOnChange: true)
-                .Build();
-            Log.Logger = new LoggerConfiguration()
-                .ReadFrom.Configuration(configuration)
-                .CreateLogger();
-        }
+		#region logging
+		private IConfigurationRoot configuration;
 
-        [Description("The importance of a log event")]
-        public LogEventLevel LogLevel
-        {
-            get
-            {
-                var logLevelStr = persistentDictionary.GetStringFromJsonPath("Serilog", "MinimumLevel");
-                return Enum.TryParse<LogEventLevel>(logLevelStr, out var logLevelEnum) ? logLevelEnum : LogEventLevel.Information;
-            }
-            set
-            {
-                var valueWasChanged = persistentDictionary.SetWithJsonPath("Serilog", "MinimumLevel", value.ToString());
-                if (!valueWasChanged)
-                {
-                    Log.Logger.Debug("LogLevel.set attempt. No change");
-                    return;
-                }
+		public void ConfigureLogging()
+		{
+			configuration = new ConfigurationBuilder()
+				.AddJsonFile(SettingsFilePath, optional: false, reloadOnChange: true)
+				.Build();
+			Log.Logger = new LoggerConfiguration()
+				.ReadFrom.Configuration(configuration)
+				.CreateLogger();
+		}
 
-                configuration.Reload();
+		[Description("The importance of a log event")]
+		public LogEventLevel LogLevel
+		{
+			get
+			{
+				var logLevelStr = persistentDictionary.GetStringFromJsonPath("Serilog", "MinimumLevel");
+				return Enum.TryParse<LogEventLevel>(logLevelStr, out var logLevelEnum) ? logLevelEnum : LogEventLevel.Information;
+			}
+			set
+			{
+				var valueWasChanged = persistentDictionary.SetWithJsonPath("Serilog", "MinimumLevel", value.ToString());
+				if (!valueWasChanged)
+				{
+					Log.Logger.Debug("LogLevel.set attempt. No change");
+					return;
+				}
 
-                Log.Logger.Information("Updated LogLevel MinimumLevel. {@DebugInfo}", new
-                {
-                    LogLevel_Verbose_Enabled = Log.Logger.IsVerboseEnabled(),
-                    LogLevel_Debug_Enabled = Log.Logger.IsDebugEnabled(),
-                    LogLevel_Information_Enabled = Log.Logger.IsInformationEnabled(),
-                    LogLevel_Warning_Enabled = Log.Logger.IsWarningEnabled(),
-                    LogLevel_Error_Enabled = Log.Logger.IsErrorEnabled(),
-                    LogLevel_Fatal_Enabled = Log.Logger.IsFatalEnabled()
-                });
-            }
-        }
+				configuration.Reload();
+
+				Log.Logger.Information("Updated LogLevel MinimumLevel. {@DebugInfo}", new
+				{
+					LogLevel_Verbose_Enabled = Log.Logger.IsVerboseEnabled(),
+					LogLevel_Debug_Enabled = Log.Logger.IsDebugEnabled(),
+					LogLevel_Information_Enabled = Log.Logger.IsInformationEnabled(),
+					LogLevel_Warning_Enabled = Log.Logger.IsWarningEnabled(),
+					LogLevel_Error_Enabled = Log.Logger.IsErrorEnabled(),
+					LogLevel_Fatal_Enabled = Log.Logger.IsFatalEnabled()
+				});
+			}
+		}
 		#endregion
 
 		#region singleton stuff
 		public static Configuration Instance { get; } = new Configuration();
-        private Configuration() { }
-        #endregion
+		private Configuration() { }
+		#endregion
 
-        #region LibationFiles
-        private static string APPSETTINGS_JSON { get; } = Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location), "appsettings.json");
-        private const string LIBATION_FILES_KEY = "LibationFiles";
+		#region LibationFiles
+		private static string APPSETTINGS_JSON { get; } = Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location), "appsettings.json");
+		private const string LIBATION_FILES_KEY = "LibationFiles";
 
-        [Description("Location for storage of program-created files")]
-        public string LibationFiles
-        {
-            get
-            {
-                if (libationFilesPathCache is not null)
-                    return libationFilesPathCache;
+		[Description("Location for storage of program-created files")]
+		public string LibationFiles
+		{
+			get
+			{
+				if (libationFilesPathCache is not null)
+					return libationFilesPathCache;
 
-                // FIRST: must write here before SettingsFilePath in next step reads cache
-                libationFilesPathCache = getLibationFilesSettingFromJson();
+				// FIRST: must write here before SettingsFilePath in next step reads cache
+				libationFilesPathCache = getLibationFilesSettingFromJson();
 
-                // SECOND. before setting to json file with SetWithJsonPath, PersistentDictionary must exist
-                persistentDictionary = new PersistentDictionary(SettingsFilePath);
+				// SECOND. before setting to json file with SetWithJsonPath, PersistentDictionary must exist
+				persistentDictionary = new PersistentDictionary(SettingsFilePath);
 
-                // Config init in ensureSerilogConfig() only happens when serilog setting is first created (prob on 1st run).
-                // This Set() enforces current LibationFiles every time we restart Libation or redirect LibationFiles
-                var logPath = Path.Combine(LibationFiles, "Log.log");
+				// Config init in ensureSerilogConfig() only happens when serilog setting is first created (prob on 1st run).
+				// This Set() enforces current LibationFiles every time we restart Libation or redirect LibationFiles
+				var logPath = Path.Combine(LibationFiles, "Log.log");
 
-                // BAD: Serilog.WriteTo[1].Args
-                //      "[1]" assumes ordinal position
-                // GOOD: Serilog.WriteTo[?(@.Name=='File')].Args
-                var jsonpath = "Serilog.WriteTo[?(@.Name=='File')].Args";
+				// BAD: Serilog.WriteTo[1].Args
+				//      "[1]" assumes ordinal position
+				// GOOD: Serilog.WriteTo[?(@.Name=='File')].Args
+				var jsonpath = "Serilog.WriteTo[?(@.Name=='File')].Args";
 
-                SetWithJsonPath(jsonpath, "path", logPath, true);
+				SetWithJsonPath(jsonpath, "path", logPath, true);
 
-                return libationFilesPathCache;
-            }
-        }
+				return libationFilesPathCache;
+			}
+		}
 
-        private static string libationFilesPathCache;
+		private static string libationFilesPathCache { get; set; }
 
-        private string getLibationFilesSettingFromJson()
-        {
-            string startingContents = null;
-            try
-            {
-                if (File.Exists(APPSETTINGS_JSON))
-                {
-                    startingContents = File.ReadAllText(APPSETTINGS_JSON);
-                    var startingJObj = JObject.Parse(startingContents);
+		private string getLibationFilesSettingFromJson()
+		{
+			string startingContents = null;
+			try
+			{
+				if (File.Exists(APPSETTINGS_JSON))
+				{
+					startingContents = File.ReadAllText(APPSETTINGS_JSON);
+					var startingJObj = JObject.Parse(startingContents);
 
-                    if (startingJObj.ContainsKey(LIBATION_FILES_KEY))
-                    {
-                        var startingValue = startingJObj[LIBATION_FILES_KEY].Value<string>();
-                        if (!string.IsNullOrWhiteSpace(startingValue))
-                            return startingValue;
-                    }
-                }
-            }
-            catch { }
+					if (startingJObj.ContainsKey(LIBATION_FILES_KEY))
+					{
+						var startingValue = startingJObj[LIBATION_FILES_KEY].Value<string>();
+						if (!string.IsNullOrWhiteSpace(startingValue))
+							return startingValue;
+					}
+				}
+			}
+			catch { }
 
-            // not found. write to file. read from file
-            var endingContents = new JObject { { LIBATION_FILES_KEY, UserProfile } }.ToString(Formatting.Indented);
-            if (startingContents != endingContents)
-            {
-                File.WriteAllText(APPSETTINGS_JSON, endingContents);
-                System.Threading.Thread.Sleep(100);
-            }
+			// not found. write to file. read from file
+			var endingContents = new JObject { { LIBATION_FILES_KEY, UserProfile.ToString() } }.ToString(Formatting.Indented);
+			if (startingContents != endingContents)
+			{
+				File.WriteAllText(APPSETTINGS_JSON, endingContents);
+				System.Threading.Thread.Sleep(100);
+			}
 
-            // do not check whether directory exists. special/meta directory (eg: AppDir) is valid
-            // verify from live file. no try/catch. want failures to be visible
-            var jObjFinal = JObject.Parse(File.ReadAllText(APPSETTINGS_JSON));
-            var valueFinal = jObjFinal[LIBATION_FILES_KEY].Value<string>();
-            return valueFinal;
-        }
+			// do not check whether directory exists. special/meta directory (eg: AppDir) is valid
+			// verify from live file. no try/catch. want failures to be visible
+			var jObjFinal = JObject.Parse(File.ReadAllText(APPSETTINGS_JSON));
+			var valueFinal = jObjFinal[LIBATION_FILES_KEY].Value<string>();
+			return valueFinal;
+		}
 
-        public void SetLibationFiles(string directory)
-        {
-            libationFilesPathCache = null;
+		public void SetLibationFiles(string directory)
+		{
+			libationFilesPathCache = null;
 
-            // ensure exists
-            if (!File.Exists(APPSETTINGS_JSON))
-            {
-                // getter creates new file, loads PersistentDictionary
-                var _ = LibationFiles;
-                System.Threading.Thread.Sleep(100);
-            }
+			// ensure exists
+			if (!File.Exists(APPSETTINGS_JSON))
+			{
+				// getter creates new file, loads PersistentDictionary
+				var _ = LibationFiles;
+				System.Threading.Thread.Sleep(100);
+			}
 
-            var startingContents = File.ReadAllText(APPSETTINGS_JSON);
-            var jObj = JObject.Parse(startingContents);
+			var startingContents = File.ReadAllText(APPSETTINGS_JSON);
+			var jObj = JObject.Parse(startingContents);
 
-            jObj[LIBATION_FILES_KEY] = directory;
+			jObj[LIBATION_FILES_KEY] = directory;
 
-            var endingContents = JsonConvert.SerializeObject(jObj, Formatting.Indented);
-            if (startingContents == endingContents)
-                return;
+			var endingContents = JsonConvert.SerializeObject(jObj, Formatting.Indented);
+			if (startingContents == endingContents)
+				return;
 
-            // now it's set in the file again but no settings have moved yet
-            File.WriteAllText(APPSETTINGS_JSON, endingContents);
+			// now it's set in the file again but no settings have moved yet
+			File.WriteAllText(APPSETTINGS_JSON, endingContents);
 
-            try
-            {
-                Log.Logger.Information("Libation files changed {@DebugInfo}", new { APPSETTINGS_JSON, LIBATION_FILES_KEY, directory });
-            }
-            catch { }
-        }
-        #endregion
-    }
+			try
+			{
+				Log.Logger.Information("Libation files changed {@DebugInfo}", new { APPSETTINGS_JSON, LIBATION_FILES_KEY, directory });
+			}
+			catch { }
+		}
+		#endregion
+	}
 }

Source/LibationFileManager/FilePathCache.cs

@@ -3,13 +3,14 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Dinah.Core.Collections.Immutable;
+using FileManager;
 using Newtonsoft.Json;
 
 namespace LibationFileManager
 {
 	public static class FilePathCache
 	{
-		public record CacheEntry(string Id, FileType FileType, string Path);
+		public record CacheEntry(string Id, FileType FileType, LongPath Path);
 
 		private const string FILENAME = "FileLocations.json";
 
@@ -18,7 +19,7 @@ namespace LibationFileManager
 
 		private static Cache<CacheEntry> cache { get; } = new Cache<CacheEntry>();
 
-		private static string jsonFile => Path.Combine(Configuration.Instance.LibationFiles, FILENAME);
+		private static LongPath jsonFile => Path.Combine(Configuration.Instance.LibationFiles, FILENAME);
 
         static FilePathCache()
         {
@@ -44,12 +45,12 @@ namespace LibationFileManager
 
         public static bool Exists(string id, FileType type) => GetFirstPath(id, type) is not null;
 
-		public static List<(FileType fileType, string path)> GetFiles(string id)
+		public static List<(FileType fileType, LongPath path)> GetFiles(string id)
 			=> getEntries(entry => entry.Id == id)
 			.Select(entry => (entry.FileType, entry.Path))
 			.ToList();
 
-		public static string GetFirstPath(string id, FileType type)
+		public static LongPath GetFirstPath(string id, FileType type)
 			=> getEntries(entry => entry.Id == id && entry.FileType == type)
 			?.FirstOrDefault()
 			?.Path;
@@ -62,7 +63,7 @@ namespace LibationFileManager
 
 			remove(entries.Where(e => !File.Exists(e.Path)).ToList());
 
-			return entries;
+			return cache.Where(predicate).ToList();
 		}
 
 		private static void remove(List<CacheEntry> entries)

Source/LibationFileManager/Templates.cs

@@ -8,277 +8,332 @@ using FileManager;
 
 namespace LibationFileManager
 {
-    public abstract class Templates
-    {
-        protected static string[] Valid => Array.Empty<string>();
-        public const string ERROR_NULL_IS_INVALID = "Null template is invalid.";
-        public const string ERROR_FULL_PATH_IS_INVALID = @"No colons or full paths allowed. Eg: should not start with C:\";
-        public const string ERROR_INVALID_FILE_NAME_CHAR = @"Only file name friendly characters allowed. Eg: no colons or slashes";
+	public abstract class Templates
+	{
+		protected static string[] Valid => Array.Empty<string>();
+		public const string ERROR_NULL_IS_INVALID = "Null template is invalid.";
+		public const string ERROR_FULL_PATH_IS_INVALID = @"No colons or full paths allowed. Eg: should not start with C:\";
+		public const string ERROR_INVALID_FILE_NAME_CHAR = @"Only file name friendly characters allowed. Eg: no colons or slashes";
 
-        public const string WARNING_EMPTY = "Template is empty.";
-        public const string WARNING_WHITE_SPACE = "Template is white space.";
-        public const string WARNING_NO_TAGS = "Should use tags. Eg: <title>";
-        public const string WARNING_HAS_CHAPTER_TAGS = "Chapter tags should only be used in the template used for naming files which are split by chapter. Eg: <ch title>";
-        public const string WARNING_NO_CHAPTER_NUMBER_TAG = "Should include chapter number tag in template used for naming files which are split by chapter. Ie: <ch#> or <ch# 0>";
+		public const string WARNING_EMPTY = "Template is empty.";
+		public const string WARNING_WHITE_SPACE = "Template is white space.";
+		public const string WARNING_NO_TAGS = "Should use tags. Eg: <title>";
+		public const string WARNING_HAS_CHAPTER_TAGS = "Chapter tags should only be used in the template used for naming files which are split by chapter. Eg: <ch title>";
+		public const string WARNING_NO_CHAPTER_NUMBER_TAG = "Should include chapter number tag in template used for naming files which are split by chapter. Ie: <ch#> or <ch# 0>";
 
-        public static FolderTemplate Folder { get; } = new FolderTemplate();
-        public static FileTemplate File { get; } = new FileTemplate();
-        public static ChapterFileTemplate ChapterFile { get; } = new ChapterFileTemplate();
+		public static FolderTemplate Folder { get; } = new FolderTemplate();
+		public static FileTemplate File { get; } = new FileTemplate();
+		public static ChapterFileTemplate ChapterFile { get; } = new ChapterFileTemplate();
+		public static ChapterTitleTemplate ChapterTitle { get; } = new ChapterTitleTemplate();
 
-        public abstract string Name { get; }
-        public abstract string Description { get; }
-        public abstract string DefaultTemplate { get; }
-        protected abstract bool IsChapterized { get; }
+		public abstract string Name { get; }
+		public abstract string Description { get; }
+		public abstract string DefaultTemplate { get; }
+		protected abstract bool IsChapterized { get; }
 
-        protected Templates() { }
+		protected Templates() { }
 
 		#region validation
 		internal string GetValid(string configValue)
-        {
-            var value = configValue?.Trim();
-            return IsValid(value) ? value : DefaultTemplate;
-        }
+		{
+			var value = configValue?.Trim();
+			return IsValid(value) ? value : DefaultTemplate;
+		}
 
-        public abstract IEnumerable<string> GetErrors(string template);
-        public bool IsValid(string template) => !GetErrors(template).Any();
+		public abstract IEnumerable<string> GetErrors(string template);
+		public bool IsValid(string template) => !GetErrors(template).Any();
 
-        public abstract IEnumerable<string> GetWarnings(string template);
-        public bool HasWarnings(string template) => GetWarnings(template).Any();
+		public abstract IEnumerable<string> GetWarnings(string template);
+		public bool HasWarnings(string template) => GetWarnings(template).Any();
 
-        protected static string[] GetFileErrors(string template)
-        {
-            // File name only; not path. all other path chars are valid enough to pass this check and will be handled on final save.
+		protected static string[] GetFileErrors(string template)
+		{
+			// File name only; not path. all other path chars are valid enough to pass this check and will be handled on final save.
 
-            // null is invalid. whitespace is valid but not recommended
-            if (template is null)
-                return new[] { ERROR_NULL_IS_INVALID };
+			// null is invalid. whitespace is valid but not recommended
+			if (template is null)
+				return new[] { ERROR_NULL_IS_INVALID };
 
-            if (template.Contains(':')
-                || template.Contains(Path.DirectorySeparatorChar)
-                || template.Contains(Path.AltDirectorySeparatorChar)
-                )
-                return new[] { ERROR_INVALID_FILE_NAME_CHAR };
+			if (ReplacementCharacters.ContainsInvalid(template.Replace("<","").Replace(">","")))
+				return new[] { ERROR_INVALID_FILE_NAME_CHAR };
 
-            return Valid;
-        }
+			return Valid;
+		}
 
-        protected IEnumerable<string> GetStandardWarnings(string template)
-        {
-            var warnings = GetErrors(template).ToList();
-            if (template is null)
-                return warnings;
+		protected IEnumerable<string> GetStandardWarnings(string template)
+		{
+			var warnings = GetErrors(template).ToList();
+			if (template is null)
+				return warnings;
 
-            if (string.IsNullOrEmpty(template))
-                warnings.Add(WARNING_EMPTY);
-            else if (string.IsNullOrWhiteSpace(template))
-                warnings.Add(WARNING_WHITE_SPACE);
+			if (string.IsNullOrEmpty(template))
+				warnings.Add(WARNING_EMPTY);
+			else if (string.IsNullOrWhiteSpace(template))
+				warnings.Add(WARNING_WHITE_SPACE);
 
-            if (TagCount(template) == 0)
-                warnings.Add(WARNING_NO_TAGS);
+			if (TagCount(template) == 0)
+				warnings.Add(WARNING_NO_TAGS);
 
-            if (!IsChapterized && ContainsChapterOnlyTags(template))
-                warnings.Add(WARNING_HAS_CHAPTER_TAGS);
+			if (!IsChapterized && ContainsChapterOnlyTags(template))
+				warnings.Add(WARNING_HAS_CHAPTER_TAGS);
 
-            return warnings;
-        }
+			return warnings;
+		}
 
-        internal int TagCount(string template)
-            => GetTemplateTags()
-            // for <id><id> == 1, use:
-            //   .Count(t => template.Contains($"<{t.TagName}>"))
-            // .Sum() impl: <id><id> == 2
-            .Sum(t => template.Split($"<{t.TagName}>").Length - 1);
+		internal int TagCount(string template)
+			=> GetTemplateTags()
+			// for <id><id> == 1, use:
+			//   .Count(t => template.Contains($"<{t.TagName}>"))
+			// .Sum() impl: <id><id> == 2
+			.Sum(t => template.Split($"<{t.TagName}>").Length - 1);
 
-        internal static bool ContainsChapterOnlyTags(string template)
-            => TemplateTags.GetAll()
-            .Where(t => t.IsChapterOnly)
-            .Any(t => ContainsTag(template, t.TagName));
+		internal static bool ContainsChapterOnlyTags(string template)
+			=> TemplateTags.GetAll()
+			.Where(t => t.IsChapterOnly)
+			.Any(t => ContainsTag(template, t.TagName));
 
-        internal static bool ContainsTag(string template, string tag) => template.Contains($"<{tag}>");
-        #endregion
+		internal static bool ContainsTag(string template, string tag) => template.Contains($"<{tag}>");
+		#endregion
 
-        #region to file name
-        /// <summary>
-        /// EditTemplateDialog: Get template generated filename for portion of path
-        /// </summary>
-        public string GetPortionFilename(LibraryBookDto libraryBookDto, string template)
-            => string.IsNullOrWhiteSpace(template)
-            ? ""
-            : getFileNamingTemplate(libraryBookDto, template, null, null)
-            .GetFilePath();
+		#region to file name
+		/// <summary>
+		/// EditTemplateDialog: Get template generated filename for portion of path
+		/// </summary>
+		public string GetPortionFilename(LibraryBookDto libraryBookDto, string template)
+			=> string.IsNullOrWhiteSpace(template)
+			? ""
+			: getFileNamingTemplate(libraryBookDto, template, null, null)
+			.GetFilePath(Configuration.Instance.ReplacementCharacters).PathWithoutPrefix;
 
-        private static Regex ifSeriesRegex { get; } = new Regex("<if series->(.*?)<-if series>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+		private static Regex ifSeriesRegex { get; } = new Regex("<if series->(.*?)<-if series>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
-        internal static FileNamingTemplate getFileNamingTemplate(LibraryBookDto libraryBookDto, string template, string dirFullPath, string extension)
-        {
-            ArgumentValidator.EnsureNotNullOrWhiteSpace(template, nameof(template));
-            ArgumentValidator.EnsureNotNull(libraryBookDto, nameof(libraryBookDto));
+		internal static FileNamingTemplate getFileNamingTemplate(LibraryBookDto libraryBookDto, string template, string dirFullPath, string extension)
+		{
+			ArgumentValidator.EnsureNotNullOrWhiteSpace(template, nameof(template));
+			ArgumentValidator.EnsureNotNull(libraryBookDto, nameof(libraryBookDto));
 
-            dirFullPath = dirFullPath?.Trim() ?? "";
+			dirFullPath = dirFullPath?.Trim() ?? "";
 
-            // for non-series, remove <if series-> and <-if series> tags and everything in between
-            // for series, remove <if series-> and <-if series> tags, what's in between will remain
-            template = ifSeriesRegex.Replace(
-                template,
-                string.IsNullOrWhiteSpace(libraryBookDto.SeriesName) ? "" : "$1");
+			// for non-series, remove <if series-> and <-if series> tags and everything in between
+			// for series, remove <if series-> and <-if series> tags, what's in between will remain
+			template = ifSeriesRegex.Replace(
+				template,
+				string.IsNullOrWhiteSpace(libraryBookDto.SeriesName) ? "" : "$1");
 
-            var t = template + FileUtility.GetStandardizedExtension(extension);
-            var fullfilename = dirFullPath == "" ? t : Path.Combine(dirFullPath, t);
+			var t = template + FileUtility.GetStandardizedExtension(extension);
+			var fullfilename = dirFullPath == "" ? t : Path.Combine(dirFullPath, t);
 
-            var fileNamingTemplate = new FileNamingTemplate(fullfilename) { IllegalCharacterReplacements = "_" };
+			var fileNamingTemplate = new FileNamingTemplate(fullfilename);
 
-            var title = libraryBookDto.Title ?? "";
-            var titleShort = title.IndexOf(':') < 1 ? title : title.Substring(0, title.IndexOf(':'));
+			var title = libraryBookDto.Title ?? "";
+			var titleShort = title.IndexOf(':') < 1 ? title : title.Substring(0, title.IndexOf(':'));
 
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Id, libraryBookDto.AudibleProductId);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Title, title);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.TitleShort, titleShort);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Author, libraryBookDto.AuthorNames);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.FirstAuthor, libraryBookDto.FirstAuthor);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Narrator, libraryBookDto.NarratorNames);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.FirstNarrator, libraryBookDto.FirstNarrator);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Series, libraryBookDto.SeriesName);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.SeriesNumber, libraryBookDto.SeriesNumber);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Account, libraryBookDto.Account);
-            fileNamingTemplate.AddParameterReplacement(TemplateTags.Locale, libraryBookDto.Locale);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Id, libraryBookDto.AudibleProductId);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Title, title);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.TitleShort, titleShort);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Author, libraryBookDto.AuthorNames);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.FirstAuthor, libraryBookDto.FirstAuthor);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Narrator, libraryBookDto.NarratorNames);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.FirstNarrator, libraryBookDto.FirstNarrator);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Series, libraryBookDto.SeriesName);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.SeriesNumber, libraryBookDto.SeriesNumber);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Account, libraryBookDto.Account);
+			fileNamingTemplate.AddParameterReplacement(TemplateTags.Locale, libraryBookDto.Locale);
 
-            return fileNamingTemplate;
-        }
-        #endregion
+			return fileNamingTemplate;
+		}
+		#endregion
 
-        public IEnumerable<TemplateTags> GetTemplateTags()
-            => TemplateTags.GetAll()
-            // yeah, this line is a little funky but it works when you think through it. also: trust the unit tests
-            .Where(t => IsChapterized || !t.IsChapterOnly);
+		public virtual IEnumerable<TemplateTags> GetTemplateTags()
+			=> TemplateTags.GetAll()
+			// yeah, this line is a little funky but it works when you think through it. also: trust the unit tests
+			.Where(t => IsChapterized || !t.IsChapterOnly);
 
-        public string Sanitize(string template)
-        {
-            var value = template ?? "";
+		public string Sanitize(string template)
+		{
+			var value = template ?? "";
 
-            // don't use alt slash
-            value = value.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
+			// don't use alt slash
+			value = value.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
 
-            // don't allow double slashes
-            var sing = $"{Path.DirectorySeparatorChar}";
-            var dbl = $"{Path.DirectorySeparatorChar}{Path.DirectorySeparatorChar}";
-            while (value.Contains(dbl))
-                value = value.Replace(dbl, sing);
+			// don't allow double slashes
+			var sing = $"{Path.DirectorySeparatorChar}";
+			var dbl = $"{Path.DirectorySeparatorChar}{Path.DirectorySeparatorChar}";
+			while (value.Contains(dbl))
+				value = value.Replace(dbl, sing);
 
-            // trim. don't start or end with slash
-            while (true)
-            {
-                var start = value.Length;
-                value = value
-                    .Trim()
-                    .Trim(Path.DirectorySeparatorChar);
-                var end = value.Length;
-                if (start == end)
-                    break;
-            }
+			// trim. don't start or end with slash
+			while (true)
+			{
+				var start = value.Length;
+				value = value
+					.Trim()
+					.Trim(Path.DirectorySeparatorChar);
+				var end = value.Length;
+				if (start == end)
+					break;
+			}
 
-            return value;
-        }
+			return value;
+		}
 
-        public class FolderTemplate : Templates
-        {
+		public class FolderTemplate : Templates
+		{
 			public override string Name => "Folder Template";
-            public override string Description => Configuration.GetDescription(nameof(Configuration.FolderTemplate));
+			public override string Description => Configuration.GetDescription(nameof(Configuration.FolderTemplate));
 			public override string DefaultTemplate { get; } = "<title short> [<id>]";
-            protected override bool IsChapterized { get; } = false;
+			protected override bool IsChapterized { get; } = false;
 
-            internal FolderTemplate() : base() { }
+			internal FolderTemplate() : base() { }
 
-            #region validation
-            public override IEnumerable<string> GetErrors(string template)
-            {
-                // null is invalid. whitespace is valid but not recommended
-                if (template is null)
-                    return new[] { ERROR_NULL_IS_INVALID };
+			#region validation
+			public override IEnumerable<string> GetErrors(string template)
+			{
+				// null is invalid. whitespace is valid but not recommended
+				if (template is null)
+					return new[] { ERROR_NULL_IS_INVALID };
 
-                // must be relative. no colons. all other path chars are valid enough to pass this check and will be handled on final save.
-                if (template.Contains(':'))
-                    return new[] { ERROR_FULL_PATH_IS_INVALID };
+				// must be relative. no colons. all other path chars are valid enough to pass this check and will be handled on final save.
+				if (template.Contains(':'))
+					return new[] { ERROR_FULL_PATH_IS_INVALID };
 
-                return Valid;
-            }
-            
-            public override IEnumerable<string> GetWarnings(string template) => GetStandardWarnings(template);
-            #endregion
+				// must be relative. no colons. all other path chars are valid enough to pass this check and will be handled on final save.
+				if (ReplacementCharacters.ContainsInvalid(template.Replace("<", "").Replace(">", "")))
+						return new[] { ERROR_INVALID_FILE_NAME_CHAR };
 
-            #region to file name
-            /// <summary>USES LIVE CONFIGURATION VALUES</summary>
-            public string GetFilename(LibraryBookDto libraryBookDto, string baseDir = null)
-                => getFileNamingTemplate(libraryBookDto, Configuration.Instance.FolderTemplate, baseDir ?? AudibleFileStorage.BooksDirectory, null)
-                .GetFilePath();
-            #endregion
-        }
+				return Valid;
+			}
+			
+			public override IEnumerable<string> GetWarnings(string template) => GetStandardWarnings(template);
+			#endregion
 
-        public class FileTemplate : Templates
-        {
-            public override string Name => "File Template";
-            public override string Description => Configuration.GetDescription(nameof(Configuration.FileTemplate));
-            public override string DefaultTemplate { get; } = "<title> [<id>]";
-            protected override bool IsChapterized { get; } = false;
+			#region to file name
+			/// <summary>USES LIVE CONFIGURATION VALUES</summary>
+			public string GetFilename(LibraryBookDto libraryBookDto, string baseDir = null)
+				=> getFileNamingTemplate(libraryBookDto, Configuration.Instance.FolderTemplate, baseDir ?? AudibleFileStorage.BooksDirectory, null)
+				.GetFilePath(Configuration.Instance.ReplacementCharacters);
+			#endregion
+		}
 
-            internal FileTemplate() : base() { }
+		public class FileTemplate : Templates
+		{
+			public override string Name => "File Template";
+			public override string Description => Configuration.GetDescription(nameof(Configuration.FileTemplate));
+			public override string DefaultTemplate { get; } = "<title> [<id>]";
+			protected override bool IsChapterized { get; } = false;
 
-            #region validation
-            public override IEnumerable<string> GetErrors(string template) => GetFileErrors(template);
+			internal FileTemplate() : base() { }
 
-            public override IEnumerable<string> GetWarnings(string template) => GetStandardWarnings(template);
-            #endregion
+			#region validation
+			public override IEnumerable<string> GetErrors(string template) => GetFileErrors(template);
 
-            #region to file name
-            /// <summary>USES LIVE CONFIGURATION VALUES</summary>
-            public string GetFilename(LibraryBookDto libraryBookDto, string dirFullPath, string extension, bool returnFirstExisting = false)
-                => getFileNamingTemplate(libraryBookDto, Configuration.Instance.FileTemplate, dirFullPath, extension)
-                .GetFilePath(returnFirstExisting);
-            #endregion
-        }
+			public override IEnumerable<string> GetWarnings(string template) => GetStandardWarnings(template);
+			#endregion
 
-        public class ChapterFileTemplate : Templates
-        {
-            public override string Name => "Chapter File Template";
-            public override string Description => Configuration.GetDescription(nameof(Configuration.ChapterFileTemplate));
-            public override string DefaultTemplate { get; } = "<title> [<id>] - <ch# 0> - <ch title>";
-            protected override bool IsChapterized { get; } = true;
+			#region to file name
+			/// <summary>USES LIVE CONFIGURATION VALUES</summary>
+			public string GetFilename(LibraryBookDto libraryBookDto, string dirFullPath, string extension, bool returnFirstExisting = false)
+				=> getFileNamingTemplate(libraryBookDto, Configuration.Instance.FileTemplate, dirFullPath, extension)
+				.GetFilePath(Configuration.Instance.ReplacementCharacters, returnFirstExisting);
+			#endregion
+		}
 
-            internal ChapterFileTemplate() : base() { }
+		public class ChapterFileTemplate : Templates
+		{
+			public override string Name => "Chapter File Template";
+			public override string Description => Configuration.GetDescription(nameof(Configuration.ChapterFileTemplate));
+			public override string DefaultTemplate { get; } = "<title> [<id>] - <ch# 0> - <ch title>";
+			protected override bool IsChapterized { get; } = true;
 
-            #region validation
-            public override IEnumerable<string> GetErrors(string template) => GetFileErrors(template);
+			internal ChapterFileTemplate() : base() { }
 
-            public override IEnumerable<string> GetWarnings(string template)
-            {
-                var warnings = GetStandardWarnings(template).ToList();
-                if (template is null)
-                    return warnings;
+			#region validation
+			public override IEnumerable<string> GetErrors(string template) => GetFileErrors(template);
 
-                // recommended to incl. <ch#> or <ch# 0>
-                if (!ContainsTag(template, TemplateTags.ChNumber.TagName) && !ContainsTag(template, TemplateTags.ChNumber0.TagName))
-                    warnings.Add(WARNING_NO_CHAPTER_NUMBER_TAG);
+			public override IEnumerable<string> GetWarnings(string template)
+			{
+				var warnings = GetStandardWarnings(template).ToList();
+				if (template is null)
+					return warnings;
 
-                return warnings;
-            }
-            #endregion
+				// recommended to incl. <ch#> or <ch# 0>
+				if (!ContainsTag(template, TemplateTags.ChNumber.TagName) && !ContainsTag(template, TemplateTags.ChNumber0.TagName))
+					warnings.Add(WARNING_NO_CHAPTER_NUMBER_TAG);
 
-            #region to file name
-            /// <summary>USES LIVE CONFIGURATION VALUES</summary>
-            public string GetFilename(LibraryBookDto libraryBookDto, AaxDecrypter.MultiConvertFileProperties props)
-                => GetPortionFilename(libraryBookDto, Configuration.Instance.ChapterFileTemplate, props, AudibleFileStorage.DecryptInProgressDirectory);
+				return warnings;
+			}
+			#endregion
 
-            public string GetPortionFilename(LibraryBookDto libraryBookDto, string template, AaxDecrypter.MultiConvertFileProperties props, string fullDirPath)
-            {
-                var fileNamingTemplate = getFileNamingTemplate(libraryBookDto, template, fullDirPath, Path.GetExtension(props.OutputFileName));
+			#region to file name
+			/// <summary>USES LIVE CONFIGURATION VALUES</summary>
+			public string GetFilename(LibraryBookDto libraryBookDto, AaxDecrypter.MultiConvertFileProperties props)
+				=> GetPortionFilename(libraryBookDto, Configuration.Instance.ChapterFileTemplate, props, AudibleFileStorage.DecryptInProgressDirectory);
 
-                fileNamingTemplate.AddParameterReplacement(TemplateTags.ChCount, props.PartsTotal);
-                fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber, props.PartsPosition);
-                fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber0, FileUtility.GetSequenceFormatted(props.PartsPosition, props.PartsTotal));
-                fileNamingTemplate.AddParameterReplacement(TemplateTags.ChTitle, props.Title ?? "");
+			public string GetPortionFilename(LibraryBookDto libraryBookDto, string template, AaxDecrypter.MultiConvertFileProperties props, string fullDirPath, ReplacementCharacters replacements = null)
+			{
+				replacements ??= Configuration.Instance.ReplacementCharacters;
+				var fileNamingTemplate = getFileNamingTemplate(libraryBookDto, template, fullDirPath, Path.GetExtension(props.OutputFileName));
 
-                return fileNamingTemplate.GetFilePath();
-            }
-            #endregion
-        }
-    }
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChCount, props.PartsTotal);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber, props.PartsPosition);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber0, FileUtility.GetSequenceFormatted(props.PartsPosition, props.PartsTotal));
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChTitle, props.Title ?? "");
+
+				return fileNamingTemplate.GetFilePath(replacements).PathWithoutPrefix;
+			}
+			#endregion
+		}
+
+		public class ChapterTitleTemplate : Templates
+		{
+			private List<TemplateTags> _templateTags { get; } = new()
+			{
+				TemplateTags.Title,
+				TemplateTags.TitleShort,
+				TemplateTags.Series,
+				TemplateTags.ChCount,
+				TemplateTags.ChNumber,
+				TemplateTags.ChNumber0,
+				TemplateTags.ChTitle,
+			};
+			public override string Name => "Chapter Title Template";
+
+			public override string Description => Configuration.GetDescription(nameof(Configuration.ChapterTitleTemplate));
+
+			public override string DefaultTemplate => "<ch#> - <title short>: <ch title>";
+
+			protected override bool IsChapterized => true;
+
+			public override IEnumerable<string> GetErrors(string template)
+				=> new List<string>();
+
+			public override IEnumerable<string> GetWarnings(string template)
+				=> GetStandardWarnings(template).ToList();
+
+			public string GetTitle(LibraryBookDto libraryBookDto, AaxDecrypter.MultiConvertFileProperties props)
+				=> GetPortionTitle(libraryBookDto, Configuration.Instance.ChapterTitleTemplate, props);
+
+			public string GetPortionTitle(LibraryBookDto libraryBookDto, string template, AaxDecrypter.MultiConvertFileProperties props)
+			{
+				ArgumentValidator.EnsureNotNullOrWhiteSpace(template, nameof(template));
+				ArgumentValidator.EnsureNotNull(libraryBookDto, nameof(libraryBookDto));
+
+				var fileNamingTemplate = new MetadataNamingTemplate(template);
+			  
+				var title = libraryBookDto.Title ?? "";
+				var titleShort = title.IndexOf(':') < 1 ? title : title.Substring(0, title.IndexOf(':'));
+
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.Title, title);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.TitleShort, titleShort);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.Series, libraryBookDto.SeriesName);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChCount, props.PartsTotal);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber, props.PartsPosition);
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber0, FileUtility.GetSequenceFormatted(props.PartsPosition, props.PartsTotal));
+				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChTitle, props.Title ?? "");
+
+				return fileNamingTemplate.GetTagContents();
+			}
+			public override IEnumerable<TemplateTags> GetTemplateTags() => _templateTags;
+		}
+	}
 }

Source/LibationFileManager/UtilityExtensions.cs

@@ -7,7 +7,7 @@ namespace LibationFileManager
 {
 	public static class UtilityExtensions
 	{
-		public static void AddParameterReplacement(this FileNamingTemplate fileNamingTemplate, TemplateTags templateTags, object value)
+		public static void AddParameterReplacement(this NamingTemplate fileNamingTemplate, TemplateTags templateTags, object value)
 			=> fileNamingTemplate.AddParameterReplacement(templateTags.TagName, value);
 	}
 }

Source/LibationWinForms/Dialogs/AccountsDialog.cs

@@ -252,7 +252,7 @@ namespace LibationWinForms.Dialogs
 			{
 				MessageBoxLib.ShowAdminAlert(
 					this,
-					$"An error occured while exporting account:\r\n{account.AccountName}",
+					$"An error occurred while exporting account:\r\n{account.AccountName}",
 					"Error Exporting Account",
 					ex);
 			}
@@ -294,7 +294,7 @@ namespace LibationWinForms.Dialogs
 			{
 				MessageBoxLib.ShowAdminAlert(
 						this,
-						$"An error occured while importing an account from:\r\n{ofd.FileName}\r\n\r\nIs the file encrypted?",
+						$"An error occurred while importing an account from:\r\n{ofd.FileName}\r\n\r\nIs the file encrypted?",
 						"Error Importing Account",
 						ex);
 			}

Source/LibationWinForms/Dialogs/EditReplacementChars.Designer.cs

@@ -0,0 +1,171 @@
+namespace LibationWinForms.Dialogs
+{
+	partial class EditReplacementChars
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.dataGridView1 = new System.Windows.Forms.DataGridView();
+			this.defaultsBtn = new System.Windows.Forms.Button();
+			this.loFiDefaultsBtn = new System.Windows.Forms.Button();
+			this.saveBtn = new System.Windows.Forms.Button();
+			this.cancelBtn = new System.Windows.Forms.Button();
+			this.minDefaultBtn = new System.Windows.Forms.Button();
+			this.charToReplaceCol = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			this.replacementStringCol = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			this.descriptionCol = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// dataGridView1
+			// 
+			this.dataGridView1.AllowUserToResizeColumns = false;
+			this.dataGridView1.AllowUserToResizeRows = false;
+			this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+			this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+			this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
+            this.charToReplaceCol,
+            this.replacementStringCol,
+            this.descriptionCol});
+			this.dataGridView1.Location = new System.Drawing.Point(12, 12);
+			this.dataGridView1.Name = "dataGridView1";
+			this.dataGridView1.RowTemplate.Height = 25;
+			this.dataGridView1.Size = new System.Drawing.Size(498, 393);
+			this.dataGridView1.TabIndex = 0;
+			this.dataGridView1.CellEndEdit += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellEndEdit);
+			this.dataGridView1.UserDeletingRow += new System.Windows.Forms.DataGridViewRowCancelEventHandler(this.dataGridView1_UserDeletingRow);
+			this.dataGridView1.Resize += new System.EventHandler(this.dataGridView1_Resize);
+			// 
+			// defaultsBtn
+			// 
+			this.defaultsBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.defaultsBtn.Location = new System.Drawing.Point(12, 430);
+			this.defaultsBtn.Name = "defaultsBtn";
+			this.defaultsBtn.Size = new System.Drawing.Size(64, 25);
+			this.defaultsBtn.TabIndex = 1;
+			this.defaultsBtn.Text = "Defaults";
+			this.defaultsBtn.UseVisualStyleBackColor = true;
+			this.defaultsBtn.Click += new System.EventHandler(this.defaultsBtn_Click);
+			// 
+			// loFiDefaultsBtn
+			// 
+			this.loFiDefaultsBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.loFiDefaultsBtn.Location = new System.Drawing.Point(82, 430);
+			this.loFiDefaultsBtn.Name = "loFiDefaultsBtn";
+			this.loFiDefaultsBtn.Size = new System.Drawing.Size(84, 25);
+			this.loFiDefaultsBtn.TabIndex = 1;
+			this.loFiDefaultsBtn.Text = "LoFi Defaults";
+			this.loFiDefaultsBtn.UseVisualStyleBackColor = true;
+			this.loFiDefaultsBtn.Click += new System.EventHandler(this.loFiDefaultsBtn_Click);
+			// 
+			// saveBtn
+			// 
+			this.saveBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+			this.saveBtn.Location = new System.Drawing.Point(428, 430);
+			this.saveBtn.Name = "saveBtn";
+			this.saveBtn.Size = new System.Drawing.Size(82, 25);
+			this.saveBtn.TabIndex = 1;
+			this.saveBtn.Text = "Save";
+			this.saveBtn.UseVisualStyleBackColor = true;
+			this.saveBtn.Click += new System.EventHandler(this.saveBtn_Click);
+			// 
+			// cancelBtn
+			// 
+			this.cancelBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+			this.cancelBtn.Location = new System.Drawing.Point(340, 430);
+			this.cancelBtn.Name = "cancelBtn";
+			this.cancelBtn.Size = new System.Drawing.Size(82, 25);
+			this.cancelBtn.TabIndex = 1;
+			this.cancelBtn.Text = "Cancel";
+			this.cancelBtn.UseVisualStyleBackColor = true;
+			this.cancelBtn.Click += new System.EventHandler(this.cancelBtn_Click);
+			// 
+			// minDefaultBtn
+			// 
+			this.minDefaultBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.minDefaultBtn.Location = new System.Drawing.Point(172, 430);
+			this.minDefaultBtn.Name = "minDefaultBtn";
+			this.minDefaultBtn.Size = new System.Drawing.Size(80, 25);
+			this.minDefaultBtn.TabIndex = 1;
+			this.minDefaultBtn.Text = "Barebones";
+			this.minDefaultBtn.UseVisualStyleBackColor = true;
+			this.minDefaultBtn.Click += new System.EventHandler(this.minDefaultBtn_Click);
+			// 
+			// charToReplaceCol
+			// 
+			this.charToReplaceCol.HeaderText = "Char to Replace";
+			this.charToReplaceCol.MinimumWidth = 70;
+			this.charToReplaceCol.Name = "charToReplaceCol";
+			this.charToReplaceCol.Resizable = System.Windows.Forms.DataGridViewTriState.False;
+			this.charToReplaceCol.Width = 70;
+			// 
+			// replacementStringCol
+			// 
+			this.replacementStringCol.HeaderText = "Replacement Text";
+			this.replacementStringCol.MinimumWidth = 85;
+			this.replacementStringCol.Name = "replacementStringCol";
+			this.replacementStringCol.Width = 85;
+			// 
+			// descriptionCol
+			// 
+			this.descriptionCol.HeaderText = "Description";
+			this.descriptionCol.MinimumWidth = 100;
+			this.descriptionCol.Name = "descriptionCol";
+			this.descriptionCol.Width = 200;
+			// 
+			// EditReplacementChars
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(522, 467);
+			this.Controls.Add(this.minDefaultBtn);
+			this.Controls.Add(this.loFiDefaultsBtn);
+			this.Controls.Add(this.cancelBtn);
+			this.Controls.Add(this.saveBtn);
+			this.Controls.Add(this.defaultsBtn);
+			this.Controls.Add(this.dataGridView1);
+			this.Name = "EditReplacementChars";
+			this.Text = "Character Replacements";
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
+			this.ResumeLayout(false);
+
+		}
+
+		#endregion
+
+		private System.Windows.Forms.DataGridView dataGridView1;
+		private System.Windows.Forms.Button defaultsBtn;
+		private System.Windows.Forms.Button loFiDefaultsBtn;
+		private System.Windows.Forms.Button saveBtn;
+		private System.Windows.Forms.Button cancelBtn;
+		private System.Windows.Forms.Button minDefaultBtn;
+		private System.Windows.Forms.DataGridViewTextBoxColumn charToReplaceCol;
+		private System.Windows.Forms.DataGridViewTextBoxColumn replacementStringCol;
+		private System.Windows.Forms.DataGridViewTextBoxColumn descriptionCol;
+	}
+}

Source/LibationWinForms/Dialogs/EditReplacementChars.cs

@@ -0,0 +1,144 @@
+using FileManager;
+using LibationFileManager;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
+
+namespace LibationWinForms.Dialogs
+{
+	public partial class EditReplacementChars : Form
+	{
+		Configuration config;
+		public EditReplacementChars()
+		{
+			InitializeComponent();
+			dataGridView1_Resize(this, EventArgs.Empty);
+		}
+
+		public EditReplacementChars(Configuration config) : this()
+		{
+			this.config = config;
+			LoadTable(config.ReplacementCharacters.Replacements);
+		}
+
+		private void LoadTable(IReadOnlyList<Replacement> replacements)
+		{
+			dataGridView1.Rows.Clear();
+			for (int i = 0; i < replacements.Count; i++)
+			{
+				var r = replacements[i];
+
+				int row = dataGridView1.Rows.Add(r.CharacterToReplace, r.ReplacementString, r.Description);
+				dataGridView1.Rows[row].Tag = r;
+
+
+				if (r.Mandatory)
+				{
+					dataGridView1.Rows[row].Cells[charToReplaceCol.Index].ReadOnly = true;
+					dataGridView1.Rows[row].Cells[descriptionCol.Index].ReadOnly = true;
+					dataGridView1.Rows[row].Cells[charToReplaceCol.Index].Style.BackColor = System.Drawing.Color.LightGray;
+					dataGridView1.Rows[row].Cells[descriptionCol.Index].Style.BackColor = System.Drawing.Color.LightGray;
+				}
+			}
+		}
+
+		private void dataGridView1_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
+		{
+			if (e.Row?.Tag is Replacement r && r.Mandatory)
+				e.Cancel = true;
+		}
+
+		private void loFiDefaultsBtn_Click(object sender, EventArgs e)
+			=> LoadTable(ReplacementCharacters.LoFiDefault.Replacements);
+
+		private void defaultsBtn_Click(object sender, EventArgs e)
+			=> LoadTable(ReplacementCharacters.Default.Replacements);
+
+		private void minDefaultBtn_Click(object sender, EventArgs e)
+			=> LoadTable(ReplacementCharacters.Barebones.Replacements);
+
+
+		private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
+		{
+			if (e.RowIndex < 0) return;
+
+			dataGridView1.Rows[e.RowIndex].ErrorText = string.Empty;
+
+			var charToReplaceStr = dataGridView1.Rows[e.RowIndex].Cells[charToReplaceCol.Index].Value?.ToString();
+			var replacement = dataGridView1.Rows[e.RowIndex].Cells[replacementStringCol.Index].Value?.ToString() ?? string.Empty;
+			var description = dataGridView1.Rows[e.RowIndex].Cells[descriptionCol.Index].Value?.ToString() ?? string.Empty;
+
+			//Validate the whole row.  If it passes all validation, add or update the row's tag.
+			if (string.IsNullOrEmpty(charToReplaceStr) && replacement == string.Empty && description == string.Empty)
+			{
+				//Invalid entry, so delete row
+				var row = dataGridView1.Rows[e.RowIndex];
+				if (!row.IsNewRow)
+				{
+					BeginInvoke(new MethodInvoker(delegate
+					{
+						dataGridView1.Rows.Remove(row);
+					}));
+				}
+			}
+			else if (string.IsNullOrEmpty(charToReplaceStr))
+			{
+				dataGridView1.Rows[e.RowIndex].ErrorText = $"You must choose a character to replace";
+			}
+			else if (charToReplaceStr.Length > 1)
+			{
+				dataGridView1.Rows[e.RowIndex].ErrorText = $"Only 1 {charToReplaceCol.HeaderText} per entry";
+			}
+			else if (e.RowIndex >= Replacement.FIXED_COUNT &&
+				   dataGridView1.Rows
+				   .Cast<DataGridViewRow>()
+				   .Where(r => r.Index != e.RowIndex)
+				   .Select(r => r.Tag)
+				   .OfType<Replacement>()
+				   .Any(r => r.CharacterToReplace == charToReplaceStr[0])
+				   )
+			{
+				dataGridView1.Rows[e.RowIndex].ErrorText = $"The {charToReplaceStr[0]} character is already being replaced";
+			}
+			else if (ReplacementCharacters.ContainsInvalid(replacement))
+			{
+				dataGridView1.Rows[e.RowIndex].ErrorText = $"Your {replacementStringCol.HeaderText} contains illegal characters";
+			}
+			else
+			{
+				//valid entry. Add or update Replacement in row's Tag
+				var charToReplace = charToReplaceStr[0];
+
+				if (dataGridView1.Rows[e.RowIndex].Tag is Replacement existing)
+					existing.Update(charToReplace, replacement, description);
+				else
+					dataGridView1.Rows[e.RowIndex].Tag = new Replacement(charToReplace, replacement, description);
+			}
+		}
+
+		private void saveBtn_Click(object sender, EventArgs e)
+		{
+			var replacements = dataGridView1.Rows
+				.Cast<DataGridViewRow>()
+				.Select(r => r.Tag)
+				.OfType<Replacement>()
+				.ToList();
+
+			config.ReplacementCharacters = new ReplacementCharacters { Replacements = replacements };
+			DialogResult = DialogResult.OK;
+			Close();
+		}
+
+		private void cancelBtn_Click(object sender, EventArgs e)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+
+		private void dataGridView1_Resize(object sender, EventArgs e)
+		{
+			dataGridView1.Columns[^1].Width = dataGridView1.Width - dataGridView1.Columns.Cast<DataGridViewColumn>().Sum(c => c == dataGridView1.Columns[^1] ? 0 : c.Width) - dataGridView1.RowHeadersWidth - 2;
+		}
+	}
+}

Source/LibationWinForms/Dialogs/EditReplacementChars.resx

@@ -0,0 +1,69 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="charToReplaceCol.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="replacementStringCol.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="descriptionCol.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+</root>

Source/LibationWinForms/Dialogs/EditTemplateDialog.cs

@@ -67,7 +67,7 @@ namespace LibationWinForms.Dialogs
 		private void templateTb_TextChanged(object sender, EventArgs e)
 		{
 			workingTemplateText = templateTb.Text;
-
+			var isChapterTitle = template == Templates.ChapterTitle;
 			var isFolder = template == Templates.Folder;
 
 			var libraryBookDto = new LibraryBookDto
@@ -85,22 +85,35 @@ namespace LibationWinForms.Dialogs
 			var chapterNumber = 4;
 			var chaptersTotal = 10;
 
+			var partFileProperties = new AaxDecrypter.MultiConvertFileProperties() 
+			{ 
+				OutputFileName = "", 
+				PartsPosition = chapterNumber, 
+				PartsTotal = chaptersTotal, 
+				Title = chapterName 
+			};
+
+
 			var books = config.Books;
 			var folder = Templates.Folder.GetPortionFilename(
 				libraryBookDto,
 				isFolder ? workingTemplateText : config.FolderTemplate);
+
+
 			var file
 				= template == Templates.ChapterFile
 				? Templates.ChapterFile.GetPortionFilename(
 					libraryBookDto,
 					workingTemplateText,
-					new() { OutputFileName = "", PartsPosition = chapterNumber, PartsTotal = chaptersTotal, Title = chapterName },
+					partFileProperties,
 					"")
 				: Templates.File.GetPortionFilename(
 					libraryBookDto,
 					isFolder ? config.FileTemplate : workingTemplateText);
 			var ext = config.DecryptToLossy ? "mp3" : "m4b";
 
+			var chapterTitle = Templates.ChapterTitle.GetPortionTitle(libraryBookDto, workingTemplateText, partFileProperties);
+
 			const char ZERO_WIDTH_SPACE = '\u200B';
 			var sing = $"{Path.DirectorySeparatorChar}";
 
@@ -126,6 +139,13 @@ namespace LibationWinForms.Dialogs
 			richTextBox1.Clear();
 			richTextBox1.SelectionFont = reg;
 
+			if (isChapterTitle)
+			{
+				richTextBox1.SelectionFont = bold;
+				richTextBox1.AppendText(chapterTitle);
+				return;
+			}
+
 			richTextBox1.AppendText(slashWrap(books));
 			richTextBox1.AppendText(sing);
 

Source/LibationWinForms/Dialogs/MessageBoxAlertAdminDialog.cs

@@ -3,6 +3,7 @@ using System;
 using System.Linq;
 using System.Drawing;
 using System.Windows.Forms;
+using FileManager;
 
 namespace LibationWinForms.Dialogs
 {
@@ -47,7 +48,7 @@ namespace LibationWinForms.Dialogs
 
 		private void logsLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
 		{
-			string dir = "";
+			LongPath dir = "";
 			try
 			{
 				dir = LibationFileManager.Configuration.Instance.LibationFiles;
@@ -56,7 +57,7 @@ namespace LibationWinForms.Dialogs
 
 			try
 			{
-				Go.To.Folder(dir);
+				Go.To.Folder(dir.ShortPathName);
 			}
 			catch
 			{

Source/LibationWinForms/Dialogs/SettingsDialog.AudioSettings.cs

@@ -1,13 +1,69 @@
 using System;
-using System.Collections.Generic;
+using LibationFileManager;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace LibationWinForms.Dialogs
 {
 	partial class SettingsDialog
 	{
+		private void Load_AudioSettings(Configuration config)
+		{
+			this.allowLibationFixupCbox.Text = desc(nameof(config.AllowLibationFixup));
+			this.createCueSheetCbox.Text = desc(nameof(config.CreateCueSheet));
+			this.downloadCoverArtCbox.Text = desc(nameof(config.DownloadCoverArt));
+			this.retainAaxFileCbox.Text = desc(nameof(config.RetainAaxFile));
+			this.splitFilesByChapterCbox.Text = desc(nameof(config.SplitFilesByChapter));
+			this.stripAudibleBrandingCbox.Text = desc(nameof(config.StripAudibleBrandAudio));
+			this.stripUnabridgedCbox.Text = desc(nameof(config.StripUnabridged));
+
+			allowLibationFixupCbox.Checked = config.AllowLibationFixup;
+			createCueSheetCbox.Checked = config.CreateCueSheet;
+			downloadCoverArtCbox.Checked = config.DownloadCoverArt;
+			retainAaxFileCbox.Checked = config.RetainAaxFile;
+			splitFilesByChapterCbox.Checked = config.SplitFilesByChapter;
+			stripUnabridgedCbox.Checked = config.StripUnabridged;
+			stripAudibleBrandingCbox.Checked = config.StripAudibleBrandAudio;
+			convertLosslessRb.Checked = !config.DecryptToLossy;
+			convertLossyRb.Checked = config.DecryptToLossy;
+
+			lameTargetBitrateRb.Checked = config.LameTargetBitrate;
+			lameTargetQualityRb.Checked = !config.LameTargetBitrate;
+			lameDownsampleMonoCbox.Checked = config.LameDownsampleMono;
+			lameBitrateTb.Value = config.LameBitrate;
+			lameConstantBitrateCbox.Checked = config.LameConstantBitrate;
+			LameMatchSourceBRCbox.Checked = config.LameMatchSourceBR;
+			lameVBRQualityTb.Value = config.LameVBRQuality;
+
+			chapterTitleTemplateGb.Text = desc(nameof(config.ChapterTitleTemplate));
+			chapterTitleTemplateTb.Text = config.ChapterTitleTemplate;
+
+			lameTargetRb_CheckedChanged(this, EventArgs.Empty);
+			LameMatchSourceBRCbox_CheckedChanged(this, EventArgs.Empty);
+			convertFormatRb_CheckedChanged(this, EventArgs.Empty);
+			allowLibationFixupCbox_CheckedChanged(this, EventArgs.Empty);
+		}
+
+		private void Save_AudioSettings(Configuration config)
+		{
+			config.AllowLibationFixup = allowLibationFixupCbox.Checked;
+			config.CreateCueSheet = createCueSheetCbox.Checked;
+			config.DownloadCoverArt = downloadCoverArtCbox.Checked;
+			config.RetainAaxFile = retainAaxFileCbox.Checked;
+			config.SplitFilesByChapter = splitFilesByChapterCbox.Checked;
+			config.StripUnabridged = stripUnabridgedCbox.Checked;
+			config.StripAudibleBrandAudio = stripAudibleBrandingCbox.Checked;
+			config.DecryptToLossy = convertLossyRb.Checked;
+
+			config.LameTargetBitrate = lameTargetBitrateRb.Checked;
+			config.LameDownsampleMono = lameDownsampleMonoCbox.Checked;
+			config.LameBitrate = lameBitrateTb.Value;
+			config.LameConstantBitrate = lameConstantBitrateCbox.Checked;
+			config.LameMatchSourceBR = LameMatchSourceBRCbox.Checked;
+			config.LameVBRQuality = lameVBRQualityTb.Value;
+
+			config.ChapterTitleTemplate = chapterTitleTemplateTb.Text;
+		}
+
 		private void lameTargetRb_CheckedChanged(object sender, EventArgs e)
 		{
 			lameBitrateGb.Enabled = lameTargetBitrateRb.Checked;
@@ -19,6 +75,13 @@ namespace LibationWinForms.Dialogs
 			lameBitrateTb.Enabled = !LameMatchSourceBRCbox.Checked;
 		}
 
+		private void splitFilesByChapterCbox_CheckedChanged(object sender, EventArgs e)
+		{
+			chapterTitleTemplateGb.Enabled = splitFilesByChapterCbox.Checked;
+		}
+
+		private void chapterTitleTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.ChapterTitle, chapterTitleTemplateTb);
+
 		private void convertFormatRb_CheckedChanged(object sender, EventArgs e)
 		{
 			lameTargetRb_CheckedChanged(sender, e);

Source/LibationWinForms/Dialogs/SettingsDialog.Designer.cs

@@ -52,6 +52,7 @@
 			this.tabControl = new System.Windows.Forms.TabControl();
 			this.tab1ImportantSettings = new System.Windows.Forms.TabPage();
 			this.booksGb = new System.Windows.Forms.GroupBox();
+			this.saveEpisodesToSeriesFolderCbox = new System.Windows.Forms.CheckBox();
 			this.tab2ImportLibrary = new System.Windows.Forms.TabPage();
 			this.autoDownloadEpisodesCb = new System.Windows.Forms.CheckBox();
 			this.autoScanCb = new System.Windows.Forms.CheckBox();
@@ -59,6 +60,7 @@
 			this.tab3DownloadDecrypt = new System.Windows.Forms.TabPage();
 			this.inProgressFilesGb = new System.Windows.Forms.GroupBox();
 			this.customFileNamingGb = new System.Windows.Forms.GroupBox();
+			this.editCharreplacementBtn = new System.Windows.Forms.Button();
 			this.chapterFileTemplateBtn = new System.Windows.Forms.Button();
 			this.chapterFileTemplateTb = new System.Windows.Forms.TextBox();
 			this.chapterFileTemplateLbl = new System.Windows.Forms.Label();
@@ -69,6 +71,9 @@
 			this.folderTemplateTb = new System.Windows.Forms.TextBox();
 			this.folderTemplateLbl = new System.Windows.Forms.Label();
 			this.tab4AudioFileOptions = new System.Windows.Forms.TabPage();
+			this.chapterTitleTemplateGb = new System.Windows.Forms.GroupBox();
+			this.chapterTitleTemplateBtn = new System.Windows.Forms.Button();
+			this.chapterTitleTemplateTb = new System.Windows.Forms.TextBox();
 			this.lameOptionsGb = new System.Windows.Forms.GroupBox();
 			this.lameDownsampleMonoCbox = new System.Windows.Forms.CheckBox();
 			this.lameBitrateGb = new System.Windows.Forms.GroupBox();
@@ -103,7 +108,6 @@
 			this.retainAaxFileCbox = new System.Windows.Forms.CheckBox();
 			this.downloadCoverArtCbox = new System.Windows.Forms.CheckBox();
 			this.createCueSheetCbox = new System.Windows.Forms.CheckBox();
-			this.saveEpisodesToSeriesFolderCbox = new System.Windows.Forms.CheckBox();
 			this.badBookGb.SuspendLayout();
 			this.tabControl.SuspendLayout();
 			this.tab1ImportantSettings.SuspendLayout();
@@ -113,6 +117,7 @@
 			this.inProgressFilesGb.SuspendLayout();
 			this.customFileNamingGb.SuspendLayout();
 			this.tab4AudioFileOptions.SuspendLayout();
+			this.chapterTitleTemplateGb.SuspendLayout();
 			this.lameOptionsGb.SuspendLayout();
 			this.lameBitrateGb.SuspendLayout();
 			((System.ComponentModel.ISupportInitialize)(this.lameBitrateTb)).BeginInit();
@@ -144,7 +149,7 @@
 			// saveBtn
 			// 
 			this.saveBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
-			this.saveBtn.Location = new System.Drawing.Point(667, 441);
+			this.saveBtn.Location = new System.Drawing.Point(667, 461);
 			this.saveBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
 			this.saveBtn.Name = "saveBtn";
 			this.saveBtn.Size = new System.Drawing.Size(88, 27);
@@ -157,7 +162,7 @@
 			// 
 			this.cancelBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
 			this.cancelBtn.DialogResult = System.Windows.Forms.DialogResult.Cancel;
-			this.cancelBtn.Location = new System.Drawing.Point(785, 441);
+			this.cancelBtn.Location = new System.Drawing.Point(785, 461);
 			this.cancelBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
 			this.cancelBtn.Name = "cancelBtn";
 			this.cancelBtn.Size = new System.Drawing.Size(88, 27);
@@ -262,6 +267,7 @@
 			this.splitFilesByChapterCbox.TabIndex = 13;
 			this.splitFilesByChapterCbox.Text = "[SplitFilesByChapter desc]";
 			this.splitFilesByChapterCbox.UseVisualStyleBackColor = true;
+			this.splitFilesByChapterCbox.CheckedChanged += new System.EventHandler(this.splitFilesByChapterCbox_CheckedChanged);
 			// 
 			// allowLibationFixupCbox
 			// 
@@ -360,7 +366,7 @@
 			this.tabControl.Location = new System.Drawing.Point(12, 12);
 			this.tabControl.Name = "tabControl";
 			this.tabControl.SelectedIndex = 0;
-			this.tabControl.Size = new System.Drawing.Size(862, 423);
+			this.tabControl.Size = new System.Drawing.Size(862, 443);
 			this.tabControl.TabIndex = 100;
 			// 
 			// tab1ImportantSettings
@@ -372,7 +378,7 @@
 			this.tab1ImportantSettings.Location = new System.Drawing.Point(4, 24);
 			this.tab1ImportantSettings.Name = "tab1ImportantSettings";
 			this.tab1ImportantSettings.Padding = new System.Windows.Forms.Padding(3);
-			this.tab1ImportantSettings.Size = new System.Drawing.Size(854, 395);
+			this.tab1ImportantSettings.Size = new System.Drawing.Size(854, 415);
 			this.tab1ImportantSettings.TabIndex = 0;
 			this.tab1ImportantSettings.Text = "Important settings";
 			this.tab1ImportantSettings.UseVisualStyleBackColor = true;
@@ -391,6 +397,16 @@
 			this.booksGb.TabStop = false;
 			this.booksGb.Text = "Books location";
 			// 
+			// saveEpisodesToSeriesFolderCbox
+			// 
+			this.saveEpisodesToSeriesFolderCbox.AutoSize = true;
+			this.saveEpisodesToSeriesFolderCbox.Location = new System.Drawing.Point(7, 131);
+			this.saveEpisodesToSeriesFolderCbox.Name = "saveEpisodesToSeriesFolderCbox";
+			this.saveEpisodesToSeriesFolderCbox.Size = new System.Drawing.Size(191, 19);
+			this.saveEpisodesToSeriesFolderCbox.TabIndex = 3;
+			this.saveEpisodesToSeriesFolderCbox.Text = "[Save Episodes To Series Folder]";
+			this.saveEpisodesToSeriesFolderCbox.UseVisualStyleBackColor = true;
+			// 
 			// tab2ImportLibrary
 			// 
 			this.tab2ImportLibrary.Controls.Add(this.autoDownloadEpisodesCb);
@@ -401,7 +417,7 @@
 			this.tab2ImportLibrary.Location = new System.Drawing.Point(4, 24);
 			this.tab2ImportLibrary.Name = "tab2ImportLibrary";
 			this.tab2ImportLibrary.Padding = new System.Windows.Forms.Padding(3);
-			this.tab2ImportLibrary.Size = new System.Drawing.Size(854, 395);
+			this.tab2ImportLibrary.Size = new System.Drawing.Size(854, 415);
 			this.tab2ImportLibrary.TabIndex = 1;
 			this.tab2ImportLibrary.Text = "Import library";
 			this.tab2ImportLibrary.UseVisualStyleBackColor = true;
@@ -444,7 +460,7 @@
 			this.tab3DownloadDecrypt.Location = new System.Drawing.Point(4, 24);
 			this.tab3DownloadDecrypt.Name = "tab3DownloadDecrypt";
 			this.tab3DownloadDecrypt.Padding = new System.Windows.Forms.Padding(3);
-			this.tab3DownloadDecrypt.Size = new System.Drawing.Size(854, 395);
+			this.tab3DownloadDecrypt.Size = new System.Drawing.Size(854, 415);
 			this.tab3DownloadDecrypt.TabIndex = 2;
 			this.tab3DownloadDecrypt.Text = "Download/Decrypt";
 			this.tab3DownloadDecrypt.UseVisualStyleBackColor = true;
@@ -455,7 +471,7 @@
             | System.Windows.Forms.AnchorStyles.Right)));
 			this.inProgressFilesGb.Controls.Add(this.inProgressDescLbl);
 			this.inProgressFilesGb.Controls.Add(this.inProgressSelectControl);
-			this.inProgressFilesGb.Location = new System.Drawing.Point(7, 251);
+			this.inProgressFilesGb.Location = new System.Drawing.Point(6, 281);
 			this.inProgressFilesGb.Name = "inProgressFilesGb";
 			this.inProgressFilesGb.Size = new System.Drawing.Size(841, 128);
 			this.inProgressFilesGb.TabIndex = 21;
@@ -466,6 +482,7 @@
 			// 
 			this.customFileNamingGb.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
             | System.Windows.Forms.AnchorStyles.Right)));
+			this.customFileNamingGb.Controls.Add(this.editCharreplacementBtn);
 			this.customFileNamingGb.Controls.Add(this.chapterFileTemplateBtn);
 			this.customFileNamingGb.Controls.Add(this.chapterFileTemplateTb);
 			this.customFileNamingGb.Controls.Add(this.chapterFileTemplateLbl);
@@ -477,11 +494,22 @@
 			this.customFileNamingGb.Controls.Add(this.folderTemplateLbl);
 			this.customFileNamingGb.Location = new System.Drawing.Point(7, 88);
 			this.customFileNamingGb.Name = "customFileNamingGb";
-			this.customFileNamingGb.Size = new System.Drawing.Size(841, 157);
+			this.customFileNamingGb.Size = new System.Drawing.Size(841, 187);
 			this.customFileNamingGb.TabIndex = 20;
 			this.customFileNamingGb.TabStop = false;
 			this.customFileNamingGb.Text = "Custom file naming";
 			// 
+			// editCharreplacementBtn
+			// 
+			this.editCharreplacementBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.editCharreplacementBtn.Location = new System.Drawing.Point(5, 158);
+			this.editCharreplacementBtn.Name = "editCharreplacementBtn";
+			this.editCharreplacementBtn.Size = new System.Drawing.Size(387, 23);
+			this.editCharreplacementBtn.TabIndex = 8;
+			this.editCharreplacementBtn.Text = "[edit char replacement desc]";
+			this.editCharreplacementBtn.UseVisualStyleBackColor = true;
+			this.editCharreplacementBtn.Click += new System.EventHandler(this.editCharreplacementBtn_Click);
+			// 
 			// chapterFileTemplateBtn
 			// 
 			this.chapterFileTemplateBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
@@ -508,9 +536,9 @@
 			this.chapterFileTemplateLbl.AutoSize = true;
 			this.chapterFileTemplateLbl.Location = new System.Drawing.Point(6, 107);
 			this.chapterFileTemplateLbl.Name = "chapterFileTemplateLbl";
-			this.chapterFileTemplateLbl.Size = new System.Drawing.Size(123, 15);
+			this.chapterFileTemplateLbl.Size = new System.Drawing.Size(132, 15);
 			this.chapterFileTemplateLbl.TabIndex = 6;
-			this.chapterFileTemplateLbl.Text = "[folder template desc]";
+			this.chapterFileTemplateLbl.Text = "[chapter template desc]";
 			// 
 			// fileTemplateBtn
 			// 
@@ -538,9 +566,9 @@
 			this.fileTemplateLbl.AutoSize = true;
 			this.fileTemplateLbl.Location = new System.Drawing.Point(6, 63);
 			this.fileTemplateLbl.Name = "fileTemplateLbl";
-			this.fileTemplateLbl.Size = new System.Drawing.Size(123, 15);
+			this.fileTemplateLbl.Size = new System.Drawing.Size(108, 15);
 			this.fileTemplateLbl.TabIndex = 3;
-			this.fileTemplateLbl.Text = "[folder template desc]";
+			this.fileTemplateLbl.Text = "[file template desc]";
 			// 
 			// folderTemplateBtn
 			// 
@@ -574,6 +602,7 @@
 			// 
 			// tab4AudioFileOptions
 			// 
+			this.tab4AudioFileOptions.Controls.Add(this.chapterTitleTemplateGb);
 			this.tab4AudioFileOptions.Controls.Add(this.lameOptionsGb);
 			this.tab4AudioFileOptions.Controls.Add(this.convertLossyRb);
 			this.tab4AudioFileOptions.Controls.Add(this.stripAudibleBrandingCbox);
@@ -587,11 +616,43 @@
 			this.tab4AudioFileOptions.Location = new System.Drawing.Point(4, 24);
 			this.tab4AudioFileOptions.Name = "tab4AudioFileOptions";
 			this.tab4AudioFileOptions.Padding = new System.Windows.Forms.Padding(3);
-			this.tab4AudioFileOptions.Size = new System.Drawing.Size(854, 395);
+			this.tab4AudioFileOptions.Size = new System.Drawing.Size(854, 415);
 			this.tab4AudioFileOptions.TabIndex = 3;
 			this.tab4AudioFileOptions.Text = "Audio File Options";
 			this.tab4AudioFileOptions.UseVisualStyleBackColor = true;
 			// 
+			// chapterTitleTemplateGb
+			// 
+			this.chapterTitleTemplateGb.Controls.Add(this.chapterTitleTemplateBtn);
+			this.chapterTitleTemplateGb.Controls.Add(this.chapterTitleTemplateTb);
+			this.chapterTitleTemplateGb.Location = new System.Drawing.Point(6, 335);
+			this.chapterTitleTemplateGb.Name = "chapterTitleTemplateGb";
+			this.chapterTitleTemplateGb.Size = new System.Drawing.Size(842, 54);
+			this.chapterTitleTemplateGb.TabIndex = 18;
+			this.chapterTitleTemplateGb.TabStop = false;
+			this.chapterTitleTemplateGb.Text = "[chapter title template desc]";
+			// 
+			// chapterTitleTemplateBtn
+			// 
+			this.chapterTitleTemplateBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+			this.chapterTitleTemplateBtn.Location = new System.Drawing.Point(764, 22);
+			this.chapterTitleTemplateBtn.Name = "chapterTitleTemplateBtn";
+			this.chapterTitleTemplateBtn.Size = new System.Drawing.Size(75, 23);
+			this.chapterTitleTemplateBtn.TabIndex = 17;
+			this.chapterTitleTemplateBtn.Text = "Edit...";
+			this.chapterTitleTemplateBtn.UseVisualStyleBackColor = true;
+			this.chapterTitleTemplateBtn.Click += new System.EventHandler(this.chapterTitleTemplateBtn_Click);
+			// 
+			// chapterTitleTemplateTb
+			// 
+			this.chapterTitleTemplateTb.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+			this.chapterTitleTemplateTb.Location = new System.Drawing.Point(6, 22);
+			this.chapterTitleTemplateTb.Name = "chapterTitleTemplateTb";
+			this.chapterTitleTemplateTb.ReadOnly = true;
+			this.chapterTitleTemplateTb.Size = new System.Drawing.Size(752, 23);
+			this.chapterTitleTemplateTb.TabIndex = 16;
+			// 
 			// lameOptionsGb
 			// 
 			this.lameOptionsGb.Controls.Add(this.lameDownsampleMonoCbox);
@@ -599,9 +660,9 @@
 			this.lameOptionsGb.Controls.Add(this.label1);
 			this.lameOptionsGb.Controls.Add(this.lameQualityGb);
 			this.lameOptionsGb.Controls.Add(this.groupBox2);
-			this.lameOptionsGb.Location = new System.Drawing.Point(415, 18);
+			this.lameOptionsGb.Location = new System.Drawing.Point(415, 6);
 			this.lameOptionsGb.Name = "lameOptionsGb";
-			this.lameOptionsGb.Size = new System.Drawing.Size(433, 371);
+			this.lameOptionsGb.Size = new System.Drawing.Size(433, 323);
 			this.lameOptionsGb.TabIndex = 14;
 			this.lameOptionsGb.TabStop = false;
 			this.lameOptionsGb.Text = "Mp3 Encoding Options";
@@ -629,7 +690,7 @@
 			this.lameBitrateGb.Controls.Add(this.lameBitrateTb);
 			this.lameBitrateGb.Location = new System.Drawing.Point(6, 84);
 			this.lameBitrateGb.Name = "lameBitrateGb";
-			this.lameBitrateGb.Size = new System.Drawing.Size(421, 112);
+			this.lameBitrateGb.Size = new System.Drawing.Size(421, 101);
 			this.lameBitrateGb.TabIndex = 0;
 			this.lameBitrateGb.TabStop = false;
 			this.lameBitrateGb.Text = "Bitrate";
@@ -637,7 +698,7 @@
 			// LameMatchSourceBRCbox
 			// 
 			this.LameMatchSourceBRCbox.AutoSize = true;
-			this.LameMatchSourceBRCbox.Location = new System.Drawing.Point(260, 87);
+			this.LameMatchSourceBRCbox.Location = new System.Drawing.Point(260, 77);
 			this.LameMatchSourceBRCbox.Name = "LameMatchSourceBRCbox";
 			this.LameMatchSourceBRCbox.Size = new System.Drawing.Size(140, 19);
 			this.LameMatchSourceBRCbox.TabIndex = 3;
@@ -648,7 +709,7 @@
 			// lameConstantBitrateCbox
 			// 
 			this.lameConstantBitrateCbox.AutoSize = true;
-			this.lameConstantBitrateCbox.Location = new System.Drawing.Point(6, 87);
+			this.lameConstantBitrateCbox.Location = new System.Drawing.Point(6, 77);
 			this.lameConstantBitrateCbox.Name = "lameConstantBitrateCbox";
 			this.lameConstantBitrateCbox.Size = new System.Drawing.Size(216, 19);
 			this.lameConstantBitrateCbox.TabIndex = 2;
@@ -734,7 +795,7 @@
 			this.label1.AutoSize = true;
 			this.label1.Enabled = false;
 			this.label1.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point);
-			this.label1.Location = new System.Drawing.Point(6, 353);
+			this.label1.Location = new System.Drawing.Point(6, 298);
 			this.label1.Name = "label1";
 			this.label1.Size = new System.Drawing.Size(172, 15);
 			this.label1.TabIndex = 1;
@@ -755,7 +816,7 @@
 			this.lameQualityGb.Controls.Add(this.label14);
 			this.lameQualityGb.Controls.Add(this.label2);
 			this.lameQualityGb.Controls.Add(this.lameVBRQualityTb);
-			this.lameQualityGb.Location = new System.Drawing.Point(6, 202);
+			this.lameQualityGb.Location = new System.Drawing.Point(6, 186);
 			this.lameQualityGb.Name = "lameQualityGb";
 			this.lameQualityGb.Size = new System.Drawing.Size(421, 109);
 			this.lameQualityGb.TabIndex = 0;
@@ -963,23 +1024,13 @@
 			this.createCueSheetCbox.UseVisualStyleBackColor = true;
 			this.createCueSheetCbox.CheckedChanged += new System.EventHandler(this.allowLibationFixupCbox_CheckedChanged);
 			// 
-			// saveEpisodesToSeriesFolderCbox
-			// 
-			this.saveEpisodesToSeriesFolderCbox.AutoSize = true;
-			this.saveEpisodesToSeriesFolderCbox.Location = new System.Drawing.Point(7, 131);
-			this.saveEpisodesToSeriesFolderCbox.Name = "saveEpisodesToSeriesFolderCbox";
-			this.saveEpisodesToSeriesFolderCbox.Size = new System.Drawing.Size(191, 19);
-			this.saveEpisodesToSeriesFolderCbox.TabIndex = 3;
-			this.saveEpisodesToSeriesFolderCbox.Text = "[Save Episodes To Series Folder]";
-			this.saveEpisodesToSeriesFolderCbox.UseVisualStyleBackColor = true;
-			// 
 			// SettingsDialog
 			// 
 			this.AcceptButton = this.saveBtn;
 			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 			this.CancelButton = this.cancelBtn;
-			this.ClientSize = new System.Drawing.Size(886, 484);
+			this.ClientSize = new System.Drawing.Size(886, 504);
 			this.Controls.Add(this.tabControl);
 			this.Controls.Add(this.cancelBtn);
 			this.Controls.Add(this.saveBtn);
@@ -1007,6 +1058,8 @@
 			this.customFileNamingGb.PerformLayout();
 			this.tab4AudioFileOptions.ResumeLayout(false);
 			this.tab4AudioFileOptions.PerformLayout();
+			this.chapterTitleTemplateGb.ResumeLayout(false);
+			this.chapterTitleTemplateGb.PerformLayout();
 			this.lameOptionsGb.ResumeLayout(false);
 			this.lameOptionsGb.PerformLayout();
 			this.lameBitrateGb.ResumeLayout(false);
@@ -1026,11 +1079,11 @@
 		private System.Windows.Forms.Label inProgressDescLbl;
 		private System.Windows.Forms.Button saveBtn;
 		private System.Windows.Forms.Button cancelBtn;
-        private System.Windows.Forms.CheckBox allowLibationFixupCbox;
+		private System.Windows.Forms.CheckBox allowLibationFixupCbox;
 		private DirectoryOrCustomSelectControl booksSelectControl;
 		private DirectorySelectControl inProgressSelectControl;
-        private System.Windows.Forms.RadioButton convertLossyRb;
-        private System.Windows.Forms.RadioButton convertLosslessRb;
+		private System.Windows.Forms.RadioButton convertLossyRb;
+		private System.Windows.Forms.RadioButton convertLosslessRb;
 		private System.Windows.Forms.Button logsBtn;
 		private System.Windows.Forms.Label loggingLevelLbl;
 		private System.Windows.Forms.ComboBox loggingLevelCb;
@@ -1041,7 +1094,7 @@
 		private System.Windows.Forms.RadioButton badBookIgnoreRb;
 		private System.Windows.Forms.CheckBox downloadEpisodesCb;
 		private System.Windows.Forms.CheckBox importEpisodesCb;
-        private System.Windows.Forms.CheckBox splitFilesByChapterCbox;
+		private System.Windows.Forms.CheckBox splitFilesByChapterCbox;
 		private System.Windows.Forms.TabControl tabControl;
 		private System.Windows.Forms.TabPage tab1ImportantSettings;
 		private System.Windows.Forms.GroupBox booksGb;
@@ -1058,7 +1111,7 @@
 		private System.Windows.Forms.Button folderTemplateBtn;
 		private System.Windows.Forms.TextBox folderTemplateTb;
 		private System.Windows.Forms.Label folderTemplateLbl;
-        private System.Windows.Forms.CheckBox showImportedStatsCb;
+		private System.Windows.Forms.CheckBox showImportedStatsCb;
 		private System.Windows.Forms.CheckBox stripAudibleBrandingCbox;
 		private System.Windows.Forms.TabPage tab4AudioFileOptions;
 		private System.Windows.Forms.CheckBox retainAaxFileCbox;
@@ -1094,9 +1147,13 @@
 		private System.Windows.Forms.Label label17;
 		private System.Windows.Forms.Label label16;
 		private System.Windows.Forms.CheckBox createCueSheetCbox;
-        private System.Windows.Forms.CheckBox autoScanCb;
+		private System.Windows.Forms.CheckBox autoScanCb;
 		private System.Windows.Forms.CheckBox downloadCoverArtCbox;
-        private System.Windows.Forms.CheckBox autoDownloadEpisodesCb;
+		private System.Windows.Forms.CheckBox autoDownloadEpisodesCb;
 		private System.Windows.Forms.CheckBox saveEpisodesToSeriesFolderCbox;
+		private System.Windows.Forms.GroupBox chapterTitleTemplateGb;
+		private System.Windows.Forms.Button chapterTitleTemplateBtn;
+		private System.Windows.Forms.TextBox chapterTitleTemplateTb;
+		private System.Windows.Forms.Button editCharreplacementBtn;
 	}
 }

Source/LibationWinForms/Dialogs/SettingsDialog.DownloadDecrypt.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Linq;
+using Dinah.Core;
+using LibationFileManager;
+
+namespace LibationWinForms.Dialogs
+{
+	public partial class SettingsDialog
+	{
+		private void folderTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.Folder, folderTemplateTb);
+		private void fileTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.File, fileTemplateTb);
+		private void chapterFileTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.ChapterFile, chapterFileTemplateTb);
+
+
+		private void editCharreplacementBtn_Click(object sender, EventArgs e)
+		{
+			var form = new EditReplacementChars(config);
+			form.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+			form.ShowDialog(this);
+		}
+
+		private void Load_DownloadDecrypt(Configuration config)
+		{
+			inProgressDescLbl.Text = desc(nameof(config.InProgress));
+			editCharreplacementBtn.Text = desc(nameof(config.ReplacementCharacters));
+
+			badBookGb.Text = desc(nameof(config.BadBook));
+			badBookAskRb.Text = Configuration.BadBookAction.Ask.GetDescription();
+			badBookAbortRb.Text = Configuration.BadBookAction.Abort.GetDescription();
+			badBookRetryRb.Text = Configuration.BadBookAction.Retry.GetDescription();
+			badBookIgnoreRb.Text = Configuration.BadBookAction.Ignore.GetDescription();
+
+			inProgressSelectControl.SetDirectoryItems(new()
+			{
+				Configuration.KnownDirectories.WinTemp,
+				Configuration.KnownDirectories.UserProfile,
+				Configuration.KnownDirectories.AppDir,
+				Configuration.KnownDirectories.MyDocs,
+				Configuration.KnownDirectories.LibationFiles
+			}, Configuration.KnownDirectories.WinTemp);
+			inProgressSelectControl.SelectDirectory(config.InProgress);
+
+			var rb = config.BadBook switch
+			{
+				Configuration.BadBookAction.Ask => this.badBookAskRb,
+				Configuration.BadBookAction.Abort => this.badBookAbortRb,
+				Configuration.BadBookAction.Retry => this.badBookRetryRb,
+				Configuration.BadBookAction.Ignore => this.badBookIgnoreRb,
+				_ => this.badBookAskRb
+			};
+			rb.Checked = true;
+
+			folderTemplateLbl.Text = desc(nameof(config.FolderTemplate));
+			fileTemplateLbl.Text = desc(nameof(config.FileTemplate));
+			chapterFileTemplateLbl.Text = desc(nameof(config.ChapterFileTemplate));
+			folderTemplateTb.Text = config.FolderTemplate;
+			fileTemplateTb.Text = config.FileTemplate;
+			chapterFileTemplateTb.Text = config.ChapterFileTemplate;
+		}
+
+		private void Save_DownloadDecrypt(Configuration config)
+		{
+			config.InProgress = inProgressSelectControl.SelectedDirectory;
+
+			config.BadBook
+				= badBookAskRb.Checked ? Configuration.BadBookAction.Ask
+				: badBookAbortRb.Checked ? Configuration.BadBookAction.Abort
+				: badBookRetryRb.Checked ? Configuration.BadBookAction.Retry
+				: badBookIgnoreRb.Checked ? Configuration.BadBookAction.Ignore
+				: Configuration.BadBookAction.Ask;
+
+			config.FolderTemplate = folderTemplateTb.Text;
+			config.FileTemplate = fileTemplateTb.Text;
+			config.ChapterFileTemplate = chapterFileTemplateTb.Text;
+		}
+	}
+}

Source/LibationWinForms/Dialogs/SettingsDialog.ImportLibrary.cs

@@ -0,0 +1,32 @@
+using LibationFileManager;
+using System;
+using System.Linq;
+
+namespace LibationWinForms.Dialogs
+{
+	public partial class SettingsDialog
+	{
+		private void Load_ImportLibrary(Configuration config)
+		{
+			this.autoScanCb.Text = desc(nameof(config.AutoScan));
+			this.showImportedStatsCb.Text = desc(nameof(config.ShowImportedStats));
+			this.importEpisodesCb.Text = desc(nameof(config.ImportEpisodes));
+			this.downloadEpisodesCb.Text = desc(nameof(config.DownloadEpisodes));
+			this.autoDownloadEpisodesCb.Text = desc(nameof(config.AutoDownloadEpisodes));
+
+			autoScanCb.Checked = config.AutoScan;
+			showImportedStatsCb.Checked = config.ShowImportedStats;
+			importEpisodesCb.Checked = config.ImportEpisodes;
+			downloadEpisodesCb.Checked = config.DownloadEpisodes;
+			autoDownloadEpisodesCb.Checked = config.AutoDownloadEpisodes;
+		}
+		private void Save_ImportLibrary(Configuration config)
+		{
+			config.AutoScan = autoScanCb.Checked;
+			config.ShowImportedStats = showImportedStatsCb.Checked;
+			config.ImportEpisodes = importEpisodesCb.Checked;
+			config.DownloadEpisodes = downloadEpisodesCb.Checked;
+			config.AutoDownloadEpisodes = autoDownloadEpisodesCb.Checked;
+		}
+	}
+}

Source/LibationWinForms/Dialogs/SettingsDialog.Important.cs

@@ -0,0 +1,93 @@
+using Dinah.Core;
+using FileManager;
+using LibationFileManager;
+using System;
+using System.IO;
+using System.Linq;
+using System.Windows.Forms;
+
+namespace LibationWinForms.Dialogs
+{
+	public partial class SettingsDialog
+	{
+		private void logsBtn_Click(object sender, EventArgs e) => Go.To.Folder(((LongPath)Configuration.Instance.LibationFiles).ShortPathName);
+
+		private void Load_Important(Configuration config)
+		{
+			{
+				loggingLevelCb.Items.Clear();
+				foreach (var level in Enum<Serilog.Events.LogEventLevel>.GetValues())
+					loggingLevelCb.Items.Add(level);
+				loggingLevelCb.SelectedItem = config.LogLevel;
+			}
+
+			booksLocationDescLbl.Text = desc(nameof(config.Books));
+			this.saveEpisodesToSeriesFolderCbox.Text = desc(nameof(config.SavePodcastsToParentFolder));
+
+			booksSelectControl.SetSearchTitle("books location");
+			booksSelectControl.SetDirectoryItems(
+				new()
+				{
+					Configuration.KnownDirectories.UserProfile,
+					Configuration.KnownDirectories.AppDir,
+					Configuration.KnownDirectories.MyDocs
+				},
+				Configuration.KnownDirectories.UserProfile,
+				"Books");
+			booksSelectControl.SelectDirectory(config.Books);
+
+			saveEpisodesToSeriesFolderCbox.Checked = config.SavePodcastsToParentFolder;
+		}
+
+		private void Save_Important(Configuration config)
+		{
+			var newBooks = booksSelectControl.SelectedDirectory;
+
+			#region validation
+			static void validationError(string text, string caption)
+				=> MessageBox.Show(text, caption, MessageBoxButtons.OK, MessageBoxIcon.Error);
+			if (string.IsNullOrWhiteSpace(newBooks))
+			{
+				validationError("Cannot set Books Location to blank", "Location is blank");
+				return;
+			}
+
+			// these 3 should do nothing. Configuration will only init these with a valid value. EditTemplateDialog ensures valid before returning
+			if (!Templates.Folder.IsValid(folderTemplateTb.Text))
+			{
+				validationError($"Not saving change to folder naming template. Invalid format.", "Invalid folder template");
+				return;
+			}
+			if (!Templates.File.IsValid(fileTemplateTb.Text))
+			{
+				validationError($"Not saving change to file naming template. Invalid format.", "Invalid file template");
+				return;
+			}
+			if (!Templates.ChapterFile.IsValid(chapterFileTemplateTb.Text))
+			{
+				validationError($"Not saving change to chapter file naming template. Invalid format.", "Invalid chapter file template");
+				return;
+			}
+			#endregion
+
+			LongPath lonNewBooks = newBooks;
+			if (!Directory.Exists(lonNewBooks))
+				Directory.CreateDirectory(lonNewBooks);
+
+			config.Books = newBooks;
+
+			{
+				var logLevelOld = config.LogLevel;
+				var logLevelNew = (Serilog.Events.LogEventLevel)loggingLevelCb.SelectedItem;
+
+				config.LogLevel = logLevelNew;
+
+				// only warn if changed during this time. don't want to warn every time user happens to change settings while level is verbose
+				if (logLevelOld != logLevelNew)
+					MessageBoxLib.VerboseLoggingWarning_ShowIfTrue();
+			}
+
+			config.SavePodcastsToParentFolder = saveEpisodesToSeriesFolderCbox.Checked;
+		}
+	}
+}

Source/LibationWinForms/Dialogs/SettingsDialog.cs

@@ -1,9 +1,6 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
-using System.IO;
 using System.Windows.Forms;
-using Dinah.Core;
 using LibationFileManager;
 
 namespace LibationWinForms.Dialogs
@@ -24,111 +21,12 @@ namespace LibationWinForms.Dialogs
 			if (this.DesignMode)
 				return;
 
-			{
-				loggingLevelCb.Items.Clear();
-				foreach (var level in Enum<Serilog.Events.LogEventLevel>.GetValues())
-					loggingLevelCb.Items.Add(level);
-				loggingLevelCb.SelectedItem = config.LogLevel;
-			}
-
-			this.autoScanCb.Text = desc(nameof(config.AutoScan));
-			this.showImportedStatsCb.Text = desc(nameof(config.ShowImportedStats));
-			this.importEpisodesCb.Text = desc(nameof(config.ImportEpisodes));
-			this.downloadEpisodesCb.Text = desc(nameof(config.DownloadEpisodes));
-			this.autoDownloadEpisodesCb.Text = desc(nameof(config.AutoDownloadEpisodes));
-
-			this.booksLocationDescLbl.Text = desc(nameof(config.Books));
-			this.inProgressDescLbl.Text = desc(nameof(config.InProgress));
-			this.allowLibationFixupCbox.Text = desc(nameof(config.AllowLibationFixup));
-			this.splitFilesByChapterCbox.Text = desc(nameof(config.SplitFilesByChapter));
-			this.stripAudibleBrandingCbox.Text = desc(nameof(config.StripAudibleBrandAudio));
-			this.retainAaxFileCbox.Text = desc(nameof(config.RetainAaxFile));
-			this.stripUnabridgedCbox.Text = desc(nameof(config.StripUnabridged));
-			this.createCueSheetCbox.Text = desc(nameof(config.CreateCueSheet));
-			this.downloadCoverArtCbox.Text = desc(nameof(config.DownloadCoverArt));
-			this.saveEpisodesToSeriesFolderCbox.Text = desc(nameof(config.SavePodcastsToParentFolder));
-
-			booksSelectControl.SetSearchTitle("books location");
-			booksSelectControl.SetDirectoryItems(
-				new()
-				{
-					Configuration.KnownDirectories.UserProfile,
-					Configuration.KnownDirectories.AppDir,
-					Configuration.KnownDirectories.MyDocs
-				},
-				Configuration.KnownDirectories.UserProfile,
-				"Books");
-			booksSelectControl.SelectDirectory(config.Books);
-
-			saveEpisodesToSeriesFolderCbox.Checked = config.SavePodcastsToParentFolder;
-
-			allowLibationFixupCbox.Checked = config.AllowLibationFixup;
-			createCueSheetCbox.Checked = config.CreateCueSheet;
-			retainAaxFileCbox.Checked = config.RetainAaxFile;
-			splitFilesByChapterCbox.Checked = config.SplitFilesByChapter;
-			stripUnabridgedCbox.Checked = config.StripUnabridged;
-			stripAudibleBrandingCbox.Checked = config.StripAudibleBrandAudio;
-			convertLosslessRb.Checked = !config.DecryptToLossy;
-			convertLossyRb.Checked = config.DecryptToLossy;
-
-			lameTargetBitrateRb.Checked = config.LameTargetBitrate;
-			lameTargetQualityRb.Checked = !config.LameTargetBitrate;
-			lameDownsampleMonoCbox.Checked = config.LameDownsampleMono;
-			lameBitrateTb.Value = config.LameBitrate;
-			lameConstantBitrateCbox.Checked = config.LameConstantBitrate;
-			LameMatchSourceBRCbox.Checked = config.LameMatchSourceBR;
-			lameVBRQualityTb.Value = config.LameVBRQuality;
-			downloadCoverArtCbox.Checked = config.DownloadCoverArt;
-
-			autoScanCb.Checked = config.AutoScan;
-			showImportedStatsCb.Checked = config.ShowImportedStats;
-			importEpisodesCb.Checked = config.ImportEpisodes;
-			downloadEpisodesCb.Checked = config.DownloadEpisodes;
-			autoDownloadEpisodesCb.Checked = config.AutoDownloadEpisodes;
-
-			lameTargetRb_CheckedChanged(this, e);
-			LameMatchSourceBRCbox_CheckedChanged(this, e);
-			convertFormatRb_CheckedChanged(this, e);
-			allowLibationFixupCbox_CheckedChanged(this, e);
-
-			inProgressSelectControl.SetDirectoryItems(new()
-			{
-				Configuration.KnownDirectories.WinTemp,
-				Configuration.KnownDirectories.UserProfile,
-				Configuration.KnownDirectories.AppDir,
-				Configuration.KnownDirectories.MyDocs,
-				Configuration.KnownDirectories.LibationFiles
-			}, Configuration.KnownDirectories.WinTemp);
-			inProgressSelectControl.SelectDirectory(config.InProgress);
-
-			badBookGb.Text = desc(nameof(config.BadBook));
-			badBookAskRb.Text = Configuration.BadBookAction.Ask.GetDescription();
-			badBookAbortRb.Text = Configuration.BadBookAction.Abort.GetDescription();
-			badBookRetryRb.Text = Configuration.BadBookAction.Retry.GetDescription();
-			badBookIgnoreRb.Text = Configuration.BadBookAction.Ignore.GetDescription();
-			var rb = config.BadBook switch
-			{
-				Configuration.BadBookAction.Ask => this.badBookAskRb,
-				Configuration.BadBookAction.Abort => this.badBookAbortRb,
-				Configuration.BadBookAction.Retry => this.badBookRetryRb,
-				Configuration.BadBookAction.Ignore => this.badBookIgnoreRb,
-				_ => this.badBookAskRb
-			};
-			rb.Checked = true;
-
-			folderTemplateLbl.Text = desc(nameof(config.FolderTemplate));
-			fileTemplateLbl.Text = desc(nameof(config.FileTemplate));
-			chapterFileTemplateLbl.Text = desc(nameof(config.ChapterFileTemplate));
-			folderTemplateTb.Text = config.FolderTemplate;
-			fileTemplateTb.Text = config.FileTemplate;
-			chapterFileTemplateTb.Text = config.ChapterFileTemplate;
+			Load_Important(config);
+			Load_ImportLibrary(config);
+			Load_DownloadDecrypt(config);
+			Load_AudioSettings(config);
 		}
 
-		private void logsBtn_Click(object sender, EventArgs e) => Go.To.Folder(Configuration.Instance.LibationFiles);
-
-		private void folderTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.Folder, folderTemplateTb);
-		private void fileTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.File, fileTemplateTb);
-		private void chapterFileTemplateBtn_Click(object sender, EventArgs e) => editTemplate(Templates.ChapterFile, chapterFileTemplateTb);
 		private static void editTemplate(Templates template, TextBox textBox)
 		{
 			var form = new EditTemplateDialog(template, textBox.Text);
@@ -138,93 +36,10 @@ namespace LibationWinForms.Dialogs
 
 		private void saveBtn_Click(object sender, EventArgs e)
 		{
-			var newBooks = booksSelectControl.SelectedDirectory;
-
-			#region validation
-			static void validationError(string text, string caption)
-				=> MessageBox.Show(text, caption, MessageBoxButtons.OK, MessageBoxIcon.Error);
-			if (string.IsNullOrWhiteSpace(newBooks))
-			{
-				validationError("Cannot set Books Location to blank", "Location is blank");
-				return;
-			}
-
-			if (!Directory.Exists(newBooks) && booksSelectControl.SelectedDirectoryIsCustom)
-			{
-				validationError($"Not saving change to Books location. This folder does not exist:\r\n{newBooks}", "Folder does not exist");
-				return;
-			}
-
-			// these 3 should do nothing. Configuration will only init these with a valid value. EditTemplateDialog ensures valid before returning
-			if (!Templates.Folder.IsValid(folderTemplateTb.Text))
-			{
-				validationError($"Not saving change to folder naming template. Invalid format.", "Invalid folder template");
-				return;
-			}
-			if (!Templates.File.IsValid(fileTemplateTb.Text))
-			{
-				validationError($"Not saving change to file naming template. Invalid format.", "Invalid file template");
-				return;
-			}
-			if (!Templates.ChapterFile.IsValid(chapterFileTemplateTb.Text))
-			{
-				validationError($"Not saving change to chapter file naming template. Invalid format.", "Invalid chapter file template");
-				return;
-			}
-			#endregion
-
-			if (!Directory.Exists(newBooks) && booksSelectControl.SelectedDirectoryIsKnown)
-				Directory.CreateDirectory(newBooks);
-
-			config.Books = newBooks;
-
-			{
-				var logLevelOld = config.LogLevel;
-				var logLevelNew = (Serilog.Events.LogEventLevel)loggingLevelCb.SelectedItem;
-
-				config.LogLevel = logLevelNew;
-
-				// only warn if changed during this time. don't want to warn every time user happens to change settings while level is verbose
-				if (logLevelOld != logLevelNew)
-					MessageBoxLib.VerboseLoggingWarning_ShowIfTrue();
-			}
-
-			config.SavePodcastsToParentFolder = saveEpisodesToSeriesFolderCbox.Checked;
-
-			config.AllowLibationFixup = allowLibationFixupCbox.Checked;
-			config.CreateCueSheet = createCueSheetCbox.Checked;
-			config.RetainAaxFile = retainAaxFileCbox.Checked;
-			config.SplitFilesByChapter = splitFilesByChapterCbox.Checked;
-			config.StripUnabridged = stripUnabridgedCbox.Checked;
-			config.StripAudibleBrandAudio = stripAudibleBrandingCbox.Checked;
-			config.DecryptToLossy = convertLossyRb.Checked;
-
-			config.LameTargetBitrate = lameTargetBitrateRb.Checked;
-			config.LameDownsampleMono = lameDownsampleMonoCbox.Checked;
-			config.LameBitrate = lameBitrateTb.Value;
-			config.LameConstantBitrate = lameConstantBitrateCbox.Checked;
-			config.LameMatchSourceBR = LameMatchSourceBRCbox.Checked;
-			config.LameVBRQuality = lameVBRQualityTb.Value;
-			config.DownloadCoverArt = downloadCoverArtCbox.Checked;
-
-			config.AutoScan = autoScanCb.Checked;
-			config.ShowImportedStats = showImportedStatsCb.Checked;
-			config.ImportEpisodes = importEpisodesCb.Checked;
-			config.DownloadEpisodes = downloadEpisodesCb.Checked;
-			config.AutoDownloadEpisodes = autoDownloadEpisodesCb.Checked;
-
-			config.InProgress = inProgressSelectControl.SelectedDirectory;
-
-			config.BadBook
-				= badBookAskRb.Checked ? Configuration.BadBookAction.Ask
-				: badBookAbortRb.Checked ? Configuration.BadBookAction.Abort
-				: badBookRetryRb.Checked ? Configuration.BadBookAction.Retry
-				: badBookIgnoreRb.Checked ? Configuration.BadBookAction.Ignore
-				: Configuration.BadBookAction.Ask;
-
-			config.FolderTemplate = folderTemplateTb.Text;
-			config.FileTemplate = fileTemplateTb.Text;
-			config.ChapterFileTemplate = chapterFileTemplateTb.Text;
+			Save_Important(config);
+			Save_ImportLibrary(config);
+			Save_DownloadDecrypt(config);
+			Save_AudioSettings(config);
 
 			this.DialogResult = DialogResult.OK;
 			this.Close();
@@ -235,6 +50,5 @@ namespace LibationWinForms.Dialogs
 			this.DialogResult = DialogResult.Cancel;
 			this.Close();
 		}
-
 	}
 }

Source/LibationWinForms/Form1.Liberate.cs

@@ -38,7 +38,7 @@ namespace LibationWinForms
 			{
 				SetQueueCollapseState(false);
 				await Task.Run(() => processBookQueue1.AddConvertMp3(ApplicationServices.DbContexts.GetLibrary_Flat_NoTracking()
-					.Where(lb => lb.Book.UserDefinedItem.BookStatus is DataLayer.LiberatedStatus.Liberated)));
+					.Where(lb => lb.Book.UserDefinedItem.BookStatus is DataLayer.LiberatedStatus.Liberated && lb.Book.ContentType is DataLayer.ContentType.Product)));
 			}
 			//Only Queue Liberated books for conversion.  This isn't a perfect filter, but it's better than nothing.
 		}

Source/LibationWinForms/Form1.ProcessQueue.cs

@@ -38,7 +38,7 @@ namespace LibationWinForms
 			{
 				// liberated: open explorer to file
 				var filePath = AudibleFileStorage.Audio.GetPath(e.Book.AudibleProductId);
-				if (!Go.To.File(filePath))
+				if (!Go.To.File(filePath?.ShortPathName))
 				{
 					var suffix = string.IsNullOrWhiteSpace(filePath) ? "" : $":\r\n{filePath}";
 					MessageBox.Show($"File not found" + suffix);

Source/LibationWinForms/Form1.ScanAuto.cs

@@ -33,7 +33,18 @@ namespace LibationWinForms
 					.ToArray();
 
 				// in autoScan, new books SHALL NOT show dialog
-				await Invoke(async () => await LibraryCommands.ImportAccountAsync(Login.WinformLoginChoiceEager.ApiExtendedFunc, accounts));
+				try
+				{
+					Task importAsync() => LibraryCommands.ImportAccountAsync(Login.WinformLoginChoiceEager.ApiExtendedFunc, accounts);
+					if (InvokeRequired)
+						await Invoke(importAsync);
+					else
+						await importAsync();
+				}
+                catch (Exception ex)
+                {
+					Serilog.Log.Logger.Error(ex, "Error invoking auto-scan");
+                }
 			};
 
 			// load init state to menu checkbox

Source/LibationWinForms/Form1.ScanNotification.cs

@@ -3,7 +3,7 @@ using ApplicationServices;
 
 namespace LibationWinForms
 {
-	// This is for the Scanning notificationin the upper right. This shown for manual scanning and auto-scan
+	// This is for the Scanning notification in the upper right. This shown for manual scanning and auto-scan
     public partial class Form1
     {
         private void Configure_ScanNotification()

Source/LibationWinForms/LibationWinForms.csproj

@@ -29,7 +29,7 @@
 
   <ItemGroup>
     <PackageReference Include="Autoupdater.NET.Official" Version="1.7.3" />
-    <PackageReference Include="Dinah.Core.WindowsDesktop" Version="4.2.2.1" />
+    <PackageReference Include="Dinah.Core.WindowsDesktop" Version="4.2.3.1" />
   </ItemGroup>
 
   <ItemGroup>
@@ -37,12 +37,17 @@
     <ProjectReference Include="..\AppScaffolding\AppScaffolding.csproj" />
     <ProjectReference Include="..\FileLiberator\FileLiberator.csproj" />
   </ItemGroup>
-
   <ItemGroup>
     <Compile Update="Form1.*.cs">
       <DependentUpon>Form1.cs</DependentUpon>
     </Compile>
   </ItemGroup>
+	
+  <ItemGroup>
+    <Compile Update="Dialogs\SettingsDialog.*.cs">
+      <DependentUpon>SettingsDialog.cs</DependentUpon>
+    </Compile>
+  </ItemGroup>
 
   <ItemGroup>
     <Compile Update="Properties\Resources.Designer.cs">

Source/LibationWinForms/ProcessQueue/ProcessBook.cs

@@ -138,15 +138,12 @@ namespace LibationWinForms.ProcessQueue
 			return Result;
 		}
 
-		public async Task Cancel()
+		public async Task CancelAsync()
 		{
 			try
 			{
 				if (CurrentProcessable is AudioDecodable audioDecodable)
-				{
-					//There's some threadding bug that causes this to hang if executed synchronously.
-					await Task.Run(audioDecodable.Cancel);
-				}
+					await audioDecodable.CancelAsync();
 			}
 			catch (Exception ex)
 			{

Source/LibationWinForms/ProcessQueue/ProcessQueueControl.cs

@@ -42,8 +42,6 @@ namespace LibationWinForms.ProcessQueue
 		public bool Running => !QueueRunner?.IsCompleted ?? false;
 		public ToolStripButton popoutBtn = new();
 
-		private System.Threading.SynchronizationContext syncContext { get; } = System.Threading.SynchronizationContext.Current;
-
 		public ProcessQueueControl()
 		{
 			InitializeComponent();
@@ -103,6 +101,7 @@ namespace LibationWinForms.ProcessQueue
 				procs.Add(pbook);
 			}
 
+			Serilog.Log.Logger.Information("Queueing {count} books", procs.Count);
 			AddToQueue(procs);
 		}
 
@@ -121,6 +120,7 @@ namespace LibationWinForms.ProcessQueue
 				procs.Add(pbook);
 			}
 
+			Serilog.Log.Logger.Information("Queueing {count} books", procs.Count);
 			AddToQueue(procs);
 		}
 		
@@ -138,44 +138,57 @@ namespace LibationWinForms.ProcessQueue
 				procs.Add(pbook);
 			}
 
+			Serilog.Log.Logger.Information("Queueing {count} books", procs.Count);
 			AddToQueue(procs);
 		}
-
 		private void AddToQueue(IEnumerable<ProcessBook> pbook)
 		{
-			syncContext.Post(_ =>
+			BeginInvoke(() =>
 			{
 				Queue.Enqueue(pbook);
 				if (!Running)
 					QueueRunner = QueueLoop();
-			},
-			null);
+			});
 		}
 
-
 		DateTime StartingTime;
 		private async Task QueueLoop()
 		{
-			StartingTime = DateTime.Now;
-			counterTimer.Start();
-
-			while (Queue.MoveNext())
+			try
 			{
-				var nextBook = Queue.Current;
+				Serilog.Log.Logger.Information("Begin processing queue");
 
-				var result = await nextBook.ProcessOneAsync();
+				StartingTime = DateTime.Now;
+				counterTimer.Start();
 
-				if (result == ProcessBookResult.ValidationFail)
-					Queue.ClearCurrent();
-				else if (result == ProcessBookResult.FailedAbort)
-					Queue.ClearQueue();
-				else if (result == ProcessBookResult.FailedSkip)
-					nextBook.LibraryBook.Book.UpdateBookStatus(DataLayer.LiberatedStatus.Error);
+				while (Queue.MoveNext())
+				{
+					var nextBook = Queue.Current;
+
+					Serilog.Log.Logger.Information("Begin processing queued item. {item_LibraryBook}", nextBook?.LibraryBook);
+
+					var result = await nextBook.ProcessOneAsync();
+
+					Serilog.Log.Logger.Information("Completed processing queued item: {item_LibraryBook}\r\nResult: {result}", nextBook?.LibraryBook, result);
+
+					if (result == ProcessBookResult.ValidationFail)
+						Queue.ClearCurrent();
+					else if (result == ProcessBookResult.FailedAbort)
+						Queue.ClearQueue();
+					else if (result == ProcessBookResult.FailedSkip)
+						nextBook.LibraryBook.Book.UpdateBookStatus(DataLayer.LiberatedStatus.Error);
+				}
+				Serilog.Log.Logger.Information("Completed processing queue");
+
+				Queue_CompletedCountChanged(this, 0);
+				counterTimer.Stop();
+				virtualFlowControl2.VirtualControlCount = Queue.Count;
+				UpdateAllControls();
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Logger.Error(ex, "An error was encountered while processing queued items");
 			}
-			Queue_CompletedCountChanged(this, 0);
-			counterTimer.Stop();
-			virtualFlowControl2.VirtualControlCount = Queue.Count;
-			UpdateAllControls();
 		}
 
 		public void WriteLine(string text)
@@ -209,10 +222,11 @@ namespace LibationWinForms.ProcessQueue
 			toolStripProgressBar1.Value = Queue.Completed.Count;
 		}
 
-		private void cancelAllBtn_Click(object sender, EventArgs e)
+		private async void cancelAllBtn_Click(object sender, EventArgs e)
 		{
 			Queue.ClearQueue();
-			Queue.Current?.Cancel();
+			if (Queue.Current is not null)
+				await Queue.Current.CancelAsync();
 			virtualFlowControl2.VirtualControlCount = Queue.Count;
 			UpdateAllControls();
 		}
@@ -281,35 +295,41 @@ namespace LibationWinForms.ProcessQueue
 		/// <param name="propertyName">The nme of the property that needs updating. If null, all properties are updated.</param>
 		private void UpdateControl(int queueIndex, string propertyName = null)
 		{
-			int i = queueIndex - FirstVisible;
-
-			if (i > NumVisible || i < 0) return;
-
-			var proc = Queue[queueIndex];
-
-			syncContext.Send(_ =>
+			try
 			{
-				Panels[i].SuspendLayout();
-				if (propertyName is null or nameof(proc.Cover))
-					Panels[i].SetCover(proc.Cover);
-				if (propertyName is null or nameof(proc.BookText))
-					Panels[i].SetBookInfo(proc.BookText);
+				int i = queueIndex - FirstVisible;
 
-				if (proc.Result != ProcessBookResult.None)
+				if (i > NumVisible || i < 0) return;
+
+				var proc = Queue[queueIndex];
+
+				Invoke(() =>
 				{
-					Panels[i].SetResult(proc.Result);
-					return;
-				}
+					Panels[i].SuspendLayout();
+					if (propertyName is null or nameof(proc.Cover))
+						Panels[i].SetCover(proc.Cover);
+					if (propertyName is null or nameof(proc.BookText))
+						Panels[i].SetBookInfo(proc.BookText);
 
-				if (propertyName is null or nameof(proc.Status))
-					Panels[i].SetStatus(proc.Status);
-				if (propertyName is null or nameof(proc.Progress))
-					Panels[i].SetProgrss(proc.Progress);
-				if (propertyName is null or nameof(proc.TimeRemaining))
-					Panels[i].SetRemainingTime(proc.TimeRemaining);
-				Panels[i].ResumeLayout();
-			},
-			null);
+					if (proc.Result != ProcessBookResult.None)
+					{
+						Panels[i].SetResult(proc.Result);
+						return;
+					}
+
+					if (propertyName is null or nameof(proc.Status))
+						Panels[i].SetStatus(proc.Status);
+					if (propertyName is null or nameof(proc.Progress))
+						Panels[i].SetProgrss(proc.Progress);
+					if (propertyName is null or nameof(proc.TimeRemaining))
+						Panels[i].SetRemainingTime(proc.TimeRemaining);
+					Panels[i].ResumeLayout();
+				});
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Logger.Error(ex, "Error updating the queued item's display.");
+			}
 		}
 
 		private void UpdateAllControls()
@@ -328,36 +348,44 @@ namespace LibationWinForms.ProcessQueue
 		/// <param name="panelClicked">The clicked control to update</param>
 		private async void VirtualFlowControl2_ButtonClicked(int queueIndex, string buttonName, ProcessBookControl panelClicked)
 		{
-			ProcessBook item = Queue[queueIndex];
-			if (buttonName == nameof(panelClicked.cancelBtn))
+			try
 			{
-				await item.Cancel();
-				Queue.RemoveQueued(item);
-				virtualFlowControl2.VirtualControlCount = Queue.Count;
+				ProcessBook item = Queue[queueIndex];
+				if (buttonName == nameof(panelClicked.cancelBtn))
+				{
+					if (item is not null)
+						await item.CancelAsync();
+					Queue.RemoveQueued(item);
+					virtualFlowControl2.VirtualControlCount = Queue.Count;
+				}
+				else if (buttonName == nameof(panelClicked.moveFirstBtn))
+				{
+					Queue.MoveQueuePosition(item, QueuePosition.Fisrt);
+					UpdateAllControls();
+				}
+				else if (buttonName == nameof(panelClicked.moveUpBtn))
+				{
+					Queue.MoveQueuePosition(item, QueuePosition.OneUp);
+					UpdateControl(queueIndex);
+					if (queueIndex > 0)
+						UpdateControl(queueIndex - 1);
+				}
+				else if (buttonName == nameof(panelClicked.moveDownBtn))
+				{
+					Queue.MoveQueuePosition(item, QueuePosition.OneDown);
+					UpdateControl(queueIndex);
+					if (queueIndex + 1 < Queue.Count)
+						UpdateControl(queueIndex + 1);
+				}
+				else if (buttonName == nameof(panelClicked.moveLastBtn))
+				{
+					Queue.MoveQueuePosition(item, QueuePosition.Last);
+					UpdateAllControls();
+				}
 			}
-			else if (buttonName == nameof(panelClicked.moveFirstBtn))
+			catch(Exception ex)
 			{
-				Queue.MoveQueuePosition(item, QueuePosition.Fisrt);
-				UpdateAllControls();
-			}
-			else if (buttonName == nameof(panelClicked.moveUpBtn))
-			{
-				Queue.MoveQueuePosition(item, QueuePosition.OneUp);
-				UpdateControl(queueIndex);
-				if (queueIndex > 0)
-					UpdateControl(queueIndex - 1);
-			}
-			else if (buttonName == nameof(panelClicked.moveDownBtn))
-			{
-				Queue.MoveQueuePosition(item, QueuePosition.OneDown);
-				UpdateControl(queueIndex);
-				if (queueIndex + 1 < Queue.Count) 
-					UpdateControl(queueIndex + 1);
-			}
-			else if (buttonName == nameof(panelClicked.moveLastBtn))
-			{
-				Queue.MoveQueuePosition(item, QueuePosition.Last);
-				UpdateAllControls();
+				Serilog.Log.Logger.Error(ex, "Error handling button click from queued item");
 			}
 		}
 

Source/LibationWinForms/Program.cs

@@ -87,7 +87,7 @@ namespace LibationWinForms
 
 			var defaultLibationFilesDir = Configuration.UserProfile;
 
-			// check for existing settigns in default location
+			// check for existing settings in default location
 			var defaultSettingsFile = Path.Combine(defaultLibationFilesDir, "Settings.json");
 			if (Configuration.SettingsFileIsValid(defaultSettingsFile))
 				config.SetLibationFiles(defaultLibationFilesDir);

Source/LibationWinForms/Updater.cs

@@ -29,7 +29,7 @@ namespace LibationWinForms
 				return;
 
 			var dialogResult = MessageBox.Show(string.Format(
-				$"There is a new version avilable. Would you like to update?\r\n\r\nAfter you close Libation, the upgrade will start automatically."),
+				$"There is a new version available. Would you like to update?\r\n\r\nAfter you close Libation, the upgrade will start automatically."),
 				"Update Available",
 				MessageBoxButtons.YesNo,
 				MessageBoxIcon.Information);

Source/_Tests/FileManager.Tests/FileNamingTemplateTests.cs

@@ -12,83 +12,42 @@ namespace FileNamingTemplateTests
 	[TestClass]
 	public class GetFilePath
 	{
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+
 		[TestMethod]
 		public void equiv_GetValidFilename()
 		{
-			var expected = @"C:\foo\bar\my_ book LONG_1234567890_1234567890_1234567890_123 [ID123456].txt";
-			var f1 = OLD_GetValidFilename(@"C:\foo\bar", "my: book LONG_1234567890_1234567890_1234567890_12345", "txt", "ID123456");
-			var f2 = NEW_GetValidFilename_FileNamingTemplate(@"C:\foo\bar", "my: book LONG_1234567890_1234567890_1234567890_12345", "txt", "ID123456");
+			var sb = new System.Text.StringBuilder();
+			sb.Append('0', 300);
+			var longText = sb.ToString();
 
-			f1.Should().Be(expected);
-			f1.Should().Be(f2);
+			var expectedNew = "C:\\foo\\bar\\my꞉ book 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [ID123456].txt";
+			var f2 = NEW_GetValidFilename_FileNamingTemplate(@"C:\foo\bar", "my: book " + longText, "txt", "ID123456");
+
+			f2.Should().Be(expectedNew);
 		}
-		private static string OLD_GetValidFilename(string dirFullPath, string filename, string extension, string metadataSuffix)
-		{
-			ArgumentValidator.EnsureNotNullOrWhiteSpace(dirFullPath, nameof(dirFullPath));
 
-			filename ??= "";
-
-			// sanitize. omit invalid characters. exception: colon => underscore
-			filename = filename.Replace(":", "_");
-			filename = FileUtility.GetSafeFileName(filename);
-
-			if (filename.Length > 50)
-				filename = filename.Substring(0, 50);
-
-			if (!string.IsNullOrWhiteSpace(metadataSuffix))
-				filename += $" [{metadataSuffix}]";
-
-			// extension is null when this method is used for directory names
-			extension = FileUtility.GetStandardizedExtension(extension);
-
-			// ensure uniqueness
-			var fullfilename = Path.Combine(dirFullPath, filename + extension);
-			var i = 0;
-			while (File.Exists(fullfilename))
-				fullfilename = Path.Combine(dirFullPath, filename + $" ({++i})" + extension);
-
-			return fullfilename;
-		}
 		private static string NEW_GetValidFilename_FileNamingTemplate(string dirFullPath, string filename, string extension, string metadataSuffix)
 		{
 			var template = $"<title> [<id>]";
 
 			var fullfilename = Path.Combine(dirFullPath, template + FileUtility.GetStandardizedExtension(extension));
 
-			var fileNamingTemplate = new FileNamingTemplate(fullfilename) { IllegalCharacterReplacements = "_" };
+			var fileNamingTemplate = new FileNamingTemplate(fullfilename);
 			fileNamingTemplate.AddParameterReplacement("title", filename);
 			fileNamingTemplate.AddParameterReplacement("id", metadataSuffix);
-			return fileNamingTemplate.GetFilePath();
+			return fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix;
 		}
 
 		[TestMethod]
 		public void equiv_GetMultipartFileName()
 		{
 			var expected = @"C:\foo\bar\my file - 002 - title.txt";
-			var f1 = OLD_GetMultipartFileName(@"C:\foo\bar\my file.txt", 2, 100, "title");
 			var f2 = NEW_GetMultipartFileName_FileNamingTemplate(@"C:\foo\bar\my file.txt", 2, 100, "title");
 
-			f1.Should().Be(expected);
-			f1.Should().Be(f2);
+			f2.Should().Be(expected);
 		}
-		private static string OLD_GetMultipartFileName(string originalPath, int partsPosition, int partsTotal, string suffix)
-		{
-			// 1-9     => 1-9
-			// 10-99   => 01-99
-			// 100-999 => 001-999
-			var chapterCountLeadingZeros = partsPosition.ToString().PadLeft(partsTotal.ToString().Length, '0');
 
-			string extension = Path.GetExtension(originalPath);
-
-			var filenameBase = $"{Path.GetFileNameWithoutExtension(originalPath)} - {chapterCountLeadingZeros}";
-			if (!string.IsNullOrWhiteSpace(suffix))
-				filenameBase += $" - {suffix}";
-
-			// Replace illegal path characters with spaces
-			var fileName = FileUtility.GetSafeFileName(filenameBase, " ");
-			var path = Path.Combine(Path.GetDirectoryName(originalPath), fileName + extension);
-			return path;
-		}
 		private static string NEW_GetMultipartFileName_FileNamingTemplate(string originalPath, int partsPosition, int partsTotal, string suffix)
 		{
 			// 1-9     => 1-9
@@ -98,10 +57,10 @@ namespace FileNamingTemplateTests
 
 			var t = Path.ChangeExtension(originalPath, null) + " - <chapter> - <title>" + Path.GetExtension(originalPath);
 
-			var fileNamingTemplate = new FileNamingTemplate(t) { IllegalCharacterReplacements = " " };
+			var fileNamingTemplate = new FileNamingTemplate(t);
 			fileNamingTemplate.AddParameterReplacement("chapter", chapterCountLeadingZeros);
 			fileNamingTemplate.AddParameterReplacement("title", suffix);
-			return fileNamingTemplate.GetFilePath();
+			return fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix;
 		}
 
 		[TestMethod]
@@ -109,7 +68,7 @@ namespace FileNamingTemplateTests
 		{
 			var fileNamingTemplate = new FileNamingTemplate(@"\foo\<title>.txt");
 			fileNamingTemplate.AddParameterReplacement("title", @"s\l/a\s/h\e/s");
-			fileNamingTemplate.GetFilePath().Should().Be(@"\foo\slashes.txt");
+			fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix.Should().Be(@"\foo\sl∕as∕he∕s.txt");
 		}
 	}
 }

Source/_Tests/FileManager.Tests/FileUtilityTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -12,49 +12,88 @@ namespace FileUtilityTests
 	[TestClass]
 	public class GetSafePath
 	{
-		[TestMethod]
-		public void null_path_throws() => Assert.ThrowsException<ArgumentNullException>(() => FileUtility.GetSafePath(null));
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault;
+		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones;
 
-		// needs separate method. middle null param not running correctly in TestExplorer when used in DataRow()
 		[TestMethod]
-		[DataRow("http://test.com/a/b/c", @"http\test.com\a\b\c")]
-		public void null_replacement(string inStr, string outStr) => Tests(inStr, null, outStr);
+		public void null_path_throws() => Assert.ThrowsException<ArgumentNullException>(() => FileUtility.GetSafePath(null, Default));
+
+		[TestMethod]
+		// non-empty replacement
+		[DataRow("abc*abc.txt", "abc✱abc.txt")]
+		// standardize slashes
+		[DataRow(@"a/b\c/d", @"a\b\c\d")]
+		// remove illegal chars
+		[DataRow("a*?:z.txt", "a✱？꞉z.txt")]
+		// retain drive letter path colon
+		[DataRow(@"C:\az.txt", @"C:\az.txt")]
+		// replace all other colons
+		[DataRow(@"a\b:c\d.txt", @"a\b꞉c\d.txt")]
+		// remove empty directories
+		[DataRow(@"C:\a\\\b\c\\\d.txt",  @"C:\a\b\c\d.txt")]
+		[DataRow(@"C:\""foo\<id>", @"C:\“foo\＜id＞")]
+		public void DefaultTests(string inStr, string outStr) => Assert.AreEqual(outStr, FileUtility.GetSafePath(inStr, Default).PathWithoutPrefix);
+
+		[TestMethod]
+		// non-empty replacement
+		[DataRow("abc*abc.txt", "abc_abc.txt")]
+		// standardize slashes
+		[DataRow(@"a/b\c/d", @"a\b\c\d")]
+		// remove illegal chars
+		[DataRow("a*?:z.txt", "a__-z.txt")]
+		// retain drive letter path colon
+		[DataRow(@"C:\az.txt", @"C:\az.txt")]
+		// replace all other colons
+		[DataRow(@"a\b:c\d.txt", @"a\b-c\d.txt")]
+		// remove empty directories
+		[DataRow(@"C:\a\\\b\c\\\d.txt",  @"C:\a\b\c\d.txt")]
+		[DataRow(@"C:\""foo\<id>", @"C:\'foo\{id}")]
+		public void LoFiDefaultTests(string inStr, string outStr) => Assert.AreEqual(outStr, FileUtility.GetSafePath(inStr, LoFiDefault).PathWithoutPrefix);
 
 		[TestMethod]
 		// empty replacement
-		[DataRow("abc*abc.txt", "", "abcabc.txt")]
-		// non-empty replacement
-		[DataRow("abc*abc.txt", "ZZZ", "abcZZZabc.txt")]
+		[DataRow("abc*abc.txt", "abc_abc.txt")]
 		// standardize slashes
-		[DataRow(@"a/b\c/d", "Z", @"a\b\c\d")]
+		[DataRow(@"a/b\c/d", @"a\b\c\d")]
 		// remove illegal chars
-		[DataRow("a*?:z.txt", "Z", "aZZZz.txt")]
+		[DataRow("a*?:z.txt", "a___z.txt")]
 		// retain drive letter path colon
-		[DataRow(@"C:\az.txt", "Z", @"C:\az.txt")]
+		[DataRow(@"C:\az.txt", @"C:\az.txt")]
 		// replace all other colons
-		[DataRow(@"a\b:c\d.txt", "ZZZ", @"a\bZZZc\d.txt")]
+		[DataRow(@"a\b:c\d.txt", @"a\b_c\d.txt")]
 		// remove empty directories
-		[DataRow(@"C:\a\\\b\c\\\d.txt", "ZZZ", @"C:\a\b\c\d.txt")]
-		[DataRow(@"C:\""foo\<id>", "ZZZ", @"C:\ZZZfoo\ZZZidZZZ")]
-		public void Tests(string inStr, string replacement, string outStr) => Assert.AreEqual(outStr, FileUtility.GetSafePath(inStr, replacement));
+		[DataRow(@"C:\a\\\b\c\\\d.txt",  @"C:\a\b\c\d.txt")]
+		[DataRow(@"C:\""foo\<id>", @"C:\_foo\_id_")]
+		public void BarebonesDefaultTests(string inStr, string outStr) => Assert.AreEqual(outStr, FileUtility.GetSafePath(inStr, Barebones).PathWithoutPrefix);
 	}
 
 	[TestClass]
 	public class GetSafeFileName
 	{
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault;
+		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones;
+
 		// needs separate method. middle null param not running correctly in TestExplorer when used in DataRow()
 		[TestMethod]
-		[DataRow("http://test.com/a/b/c", "httptest.comabc")]
-		public void url_null_replacement(string inStr, string outStr) => ReplacementTests(inStr, null, outStr);
+		[DataRow("http://test.com/a/b/c", "http꞉∕∕test.com∕a∕b∕c")]
+		public void url_null_replacement(string inStr, string outStr) => DefaultReplacementTest(inStr, outStr);
 
 		[TestMethod]
 		// empty replacement
-		[DataRow("http://test.com/a/b/c", "", "httptest.comabc")]
-		// single char replace
-		[DataRow("http://test.com/a/b/c", "_", "http___test.com_a_b_c")]
-		// multi char replace
-		[DataRow("http://test.com/a/b/c", "!!!", "http!!!!!!!!!test.com!!!a!!!b!!!c")]
-		public void ReplacementTests(string inStr, string replacement, string outStr) => FileUtility.GetSafeFileName(inStr, replacement).Should().Be(outStr);
+		[DataRow("http://test.com/a/b/c", "http꞉∕∕test.com∕a∕b∕c")]
+		public void DefaultReplacementTest(string inStr, string outStr) => Default.ReplaceInvalidFilenameChars(inStr).Should().Be(outStr);
+
+		[TestMethod]
+		// empty replacement
+		[DataRow("http://test.com/a/b/c", "http-__test.com_a_b_c")] 
+		public void LoFiDefaultReplacementTest(string inStr, string outStr) => LoFiDefault.ReplaceInvalidFilenameChars(inStr).Should().Be(outStr);
+
+		[TestMethod]
+		// empty replacement
+		[DataRow("http://test.com/a/b/c", "http___test.com_a_b_c")] 
+		public void BarebonesDefaultReplacementTest(string inStr, string outStr) => Barebones.ReplaceInvalidFilenameChars(inStr).Should().Be(outStr);
 	}
 
 	[TestClass]
@@ -117,6 +156,8 @@ namespace FileUtilityTests
 	[TestClass]
     public class GetValidFilename
 	{
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+
 		[TestMethod]
 		// dot-files
 		[DataRow(@"C:\a bc\x y z\.f i l e.txt")]
@@ -134,7 +175,7 @@ namespace FileUtilityTests
 		// file end dots
 		[DataRow(@"C:\a bc\x y z\f i l e.txt . . .", @"C:\a bc\x y z\f i l e.txt")]
 		public void Tests(string input, string expected)
-			=> FileUtility.GetValidFilename(input).Should().Be(expected);
+			=> FileUtility.GetValidFilename(input, Replacements).PathWithoutPrefix.Should().Be(expected);
 	}
 
 	[TestClass]

Source/_Tests/LibationFileManager.Tests/TemplatesTests.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Dinah.Core;
+using FileManager;
 using FluentAssertions;
 using LibationFileManager;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
@@ -51,6 +52,9 @@ namespace TemplatesTests
 	[TestClass]
 	public class getFileNamingTemplate
 	{
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+
+
 		[TestMethod]
 		[DataRow(null, "asin", @"C:\", "ext")]
 		[ExpectedException(typeof(ArgumentNullException))]
@@ -73,25 +77,29 @@ namespace TemplatesTests
 		[DataRow("<id>", "asin", @"C:\foo\bar", "ext", @"C:\foo\bar\asin.ext")]
 		public void Tests(string template, string asin, string dirFullPath, string extension, string expected)
 			=> Templates.getFileNamingTemplate(GetLibraryBook(asin), template, dirFullPath, extension)
-			.GetFilePath()
+			.GetFilePath(Replacements)
+			.PathWithoutPrefix
 			.Should().Be(expected);
 
 		[TestMethod]
 		public void IfSeries_empty()
 			=> Templates.getFileNamingTemplate(GetLibraryBook("asin", "Sherlock Holmes"), "foo<if series-><-if series>bar", @"C:\a\b", "ext")
-			.GetFilePath()
+			.GetFilePath(Replacements)
+			.PathWithoutPrefix
 			.Should().Be(@"C:\a\b\foobar.ext");
 
 		[TestMethod]
 		public void IfSeries_no_series()
 			=> Templates.getFileNamingTemplate(GetLibraryBook("asin", ""), "foo<if series->-<series>-<id>-<-if series>bar", @"C:\a\b", "ext")
-			.GetFilePath()
+			.GetFilePath(Replacements)
+			.PathWithoutPrefix
 			.Should().Be(@"C:\a\b\foobar.ext");
 
 		[TestMethod]
 		public void IfSeries_with_series()
 			=> Templates.getFileNamingTemplate(GetLibraryBook("asin", "Sherlock Holmes"), "foo<if series->-<series>-<id>-<-if series>bar", @"C:\a\b", "ext")
-			.GetFilePath()
+			.GetFilePath(Replacements)
+			.PathWithoutPrefix
 			.Should().Be(@"C:\a\b\foo-Sherlock Holmes-asin-bar.ext");
 	}
 }
@@ -383,11 +391,13 @@ namespace Templates_ChapterFile_Tests
 	[TestClass]
 	public class GetPortionFilename
 	{
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+
 		[TestMethod]
 		[DataRow("asin", "[<id>] <ch# 0> of <ch count> - <ch title>", @"C:\foo\", "txt", 6, 10, "chap", @"C:\foo\[asin] 06 of 10 - chap.txt")]
 		[DataRow("asin", "<ch#>", @"C:\foo\", "txt", 6, 10, "chap", @"C:\foo\6.txt")]
 		public void Tests(string asin, string template, string dir, string ext, int pos, int total, string chapter, string expected)
-			=> Templates.ChapterFile.GetPortionFilename(GetLibraryBook(asin), template, new() { OutputFileName = $"xyz.{ext}", PartsPosition = pos, PartsTotal = total, Title = chapter }, dir)
+			=> Templates.ChapterFile.GetPortionFilename(GetLibraryBook(asin), template, new() { OutputFileName = $"xyz.{ext}", PartsPosition = pos, PartsTotal = total, Title = chapter }, dir, Default)
 			.Should().Be(expected);
 	}
 }

Source/__README - COLLABORATORS.txt

@@ -20,7 +20,7 @@ STRUCTURE
 * Folders in the solution are numbered. Eg: "4 Domain (db)"
 * All projects should only refer to other projects in the same folder or to projects in folders with smaller numbers.
 * 1 Core Libraries
-  This is code which has roughly equivilent priority and knowledge as the BCL. In practice, if code is this universal then it doesn't live here long and is instead moved into Dinah.Core.
+  This is code which has roughly equivalent priority and knowledge as the BCL. In practice, if code is this universal then it doesn't live here long and is instead moved into Dinah.Core.
 * 2 Utilities (domain ignorant)
   Stand-alone libraries with no knowledge of anything having to do with Libation or other programs. In theory any of these should be able to one day be converted to a nuget pkg
 * 3 Domain Internal Utilities (db ignorant)