incr ver

Improve Libation's interaction with the file system & other minor fixes

.github/ISSUE_TEMPLATE/bug_report.md

@@ -27,4 +27,4 @@ If applicable, add screenshots to help explain your problem.
 [e.g. Windows 10, Windows 11, Mac, Linux (State distribution)]
 
 **Log Files**  
-Attach your Libation log file here. Logs are typically in your `[user]\Libation` folder. (For example, on windows: `C:\my_username\Libation`) Also within Libation, on the first tab in Settings you can click the button 'Open log folder'
+Attach your Libation log file here. Logs are typically in your `[user]\Libation` folder. (For example, on windows: `C:\my_username\Libation`) Also within Libation, on the first tab in Settings you can click the button 'Open log folder'. If your user folder contains the file "LibationCrash.log", attach that also.

.github/workflows/build-windows.yml

@@ -15,6 +15,10 @@ on:
         description: "Skip running unit tests"
         required: false
         default: true
+      architecture:
+        type: string
+        description: "CPU architecture targeted by the build."
+        required: true
 
 env:
   DOTNET_CONFIGURATION: "Release"
@@ -22,8 +26,11 @@ env:
 
 jobs:
   build:
-    name: "${{ matrix.os }}-${{ matrix.release_name }}"
+    name: "${{ matrix.os }}-${{ matrix.release_name }}-${{ inputs.architecture }}"
     runs-on: windows-latest
+    env:
+      OUTPUT_NAME: "${{ matrix.os }}-${{ matrix.release_name }}-${{ inputs.architecture }}"
+      RUNTIME_ID: "win-${{ inputs.architecture }}"
     strategy:
       matrix:
         os: [Windows]
@@ -63,38 +70,42 @@ jobs:
         run: |
           dotnet publish `
               Libation${{ matrix.ui }}/Libation${{ matrix.ui }}.csproj `
+              --runtime ${{ env.RUNTIME_ID }} `
               --configuration ${{ env.DOTNET_CONFIGURATION }} `
-              --output bin/Publish/${{ matrix.os }}-${{ matrix.release_name }} `
+              --output bin/Publish/${{ env.OUTPUT_NAME }} `
               -p:PublishProfile=Libation${{ matrix.ui }}/Properties/PublishProfiles/${{ matrix.os }}Profile.pubxml
           dotnet publish `
               LoadByOS/${{ matrix.os }}ConfigApp/${{ matrix.os }}ConfigApp.csproj `
+              --runtime ${{ env.RUNTIME_ID }} `
               --configuration ${{ env.DOTNET_CONFIGURATION }} `
-              --output bin/Publish/${{ matrix.os }}-${{ matrix.release_name }} `
+              --output bin/Publish/${{ env.OUTPUT_NAME }} `
               -p:PublishProfile=LoadByOS/${{ matrix.os }}ConfigApp/PublishProfiles/${{ matrix.os }}Profile.pubxml
           dotnet publish `
               LibationCli/LibationCli.csproj `
+              --runtime ${{ env.RUNTIME_ID }} `
               --configuration ${{ env.DOTNET_CONFIGURATION }} `
-              --output bin/Publish/${{ matrix.os }}-${{ matrix.release_name }} `
+              --output bin/Publish/${{ env.OUTPUT_NAME }} `
               -p:DefineConstants="${{ matrix.release_name }}" `
               -p:PublishProfile=LibationCli/Properties/PublishProfiles/${{ matrix.os }}Profile.pubxml
           dotnet publish `
               Hangover${{ matrix.ui }}/Hangover${{ matrix.ui }}.csproj `
+              --runtime ${{ env.RUNTIME_ID }} `
               --configuration ${{ env.DOTNET_CONFIGURATION }} `
-              --output bin/Publish/${{ matrix.os }}-${{ matrix.release_name }} `
+              --output bin/Publish/${{ env.OUTPUT_NAME }} `
               -p:PublishProfile=Hangover${{ matrix.ui }}/Properties/PublishProfiles/${{ matrix.os }}Profile.pubxml
 
       - name: Zip artifact
         id: zip
         working-directory: ./Source/bin/Publish
         run: |
-          $bin_dir = "${{ matrix.os }}-${{ matrix.release_name }}\"
+          $bin_dir = "${{ env.OUTPUT_NAME }}\"
           $delfiles = @(
             "WindowsConfigApp.exe",
             "WindowsConfigApp.runtimeconfig.json",
             "WindowsConfigApp.deps.json"
             )
           foreach ($file in $delfiles){ if (test-path $bin_dir$file){ Remove-Item $bin_dir$file } }
-          $artifact="${{ matrix.prefix }}Libation.${{ steps.get_version.outputs.version }}-" + "${{ matrix.os }}".ToLower() + "-${{ matrix.release_name }}"
+          $artifact="${{ matrix.prefix }}Libation.${{ steps.get_version.outputs.version }}-" + "${{ matrix.os }}".ToLower() + "-${{ matrix.release_name }}-${{ inputs.architecture }}"
           "artifact=$artifact" >> $env:GITHUB_OUTPUT
           Compress-Archive -Path "${bin_dir}*" -DestinationPath "$artifact.zip"
 

.github/workflows/build.yml

@@ -18,10 +18,14 @@ on:
 
 jobs:
   windows:
+    strategy:
+      matrix:
+        architecture: [x64]
     uses: ./.github/workflows/build-windows.yml
     with:
       version_override: ${{ inputs.version_override }}
       run_unit_tests: ${{ inputs.run_unit_tests }}
+      architecture: ${{ matrix.architecture }}
 
   linux:
     strategy:

.releaseindex.json

@@ -1,10 +1,10 @@
 {
-  "WindowsClassic":          "Classic-Libation\\.\\d+\\.\\d+\\.\\d+-win(dows)?-classic\\.zip",
-  "WindowsAvalonia":         "Libation\\.\\d+\\.\\d+\\.\\d+-win(dows)?-chardonnay\\.zip",
-  "LinuxAvalonia":           "Libation\\.\\d+\\.\\d+\\.\\d+-linux-chardonnay-amd64\\.deb",
-  "LinuxAvalonia_RPM":       "Libation\\.\\d+\\.\\d+\\.\\d+-linux-chardonnay-amd64\\.rpm",
-  "MacOSAvalonia":           "Libation\\.\\d+\\.\\d+\\.\\d+-macOS-chardonnay-x64\\.tgz",
-  "LinuxAvalonia_Arm64":     "Libation\\.\\d+\\.\\d+\\.\\d+-linux-chardonnay-arm64\\.deb",
-  "LinuxAvalonia_Arm64_RPM": "Libation\\.\\d+\\.\\d+\\.\\d+-linux-chardonnay-arm64\\.rpm",
-  "MacOSAvalonia_Arm64":     "Libation\\.\\d+\\.\\d+\\.\\d+-macOS-chardonnay-arm64\\.tgz"
+  "WindowsClassic":          "Classic-Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-win(?:dows)?-classic-x64\\.zip",
+  "WindowsAvalonia":         "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-win(?:dows)?-chardonnay-x64\\.zip",
+  "LinuxAvalonia":           "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-linux-chardonnay-amd64\\.deb",
+  "LinuxAvalonia_RPM":       "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-linux-chardonnay-amd64\\.rpm",
+  "MacOSAvalonia":           "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-macOS-chardonnay-x64\\.tgz",
+  "LinuxAvalonia_Arm64":     "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-linux-chardonnay-arm64\\.deb",
+  "LinuxAvalonia_Arm64_RPM": "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-linux-chardonnay-arm64\\.rpm",
+  "MacOSAvalonia_Arm64":     "Libation\\.\\d+\\.\\d+\\.\\d+(?:\\.\\d+)?-macOS-chardonnay-arm64\\.tgz"
 }

.vscode/launch.json

@@ -6,7 +6,7 @@
     "configurations": [
 
         {
-            "name": ".NET Core Launch (console)",
+            "name": ".NET Core Launch (console) Windows",
             "type": "coreclr",
             "request": "launch",
             "preLaunchTask": "build",
@@ -15,6 +15,17 @@
             "cwd": "${workspaceFolder}",
             "stopAtEntry": false,
             "console": "internalConsole"
+        },
+        {
+            "name": ".NET Core Launch (console) Linux",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build_linux",
+            "program": "${workspaceFolder}/Source/bin/Avalonia/Debug/Libation.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "console": "internalConsole"
         }
 
     ]

.vscode/tasks.json

@@ -37,6 +37,23 @@
                 //"reveal": "silent"
             },
             "problemMatcher": "$msCompile"
+        },
+        {
+           "label": "build_linux",
+            "type": "shell",
+            "command": "dotnet",
+            "args": [
+                "build",
+                "${workspaceFolder}/Source/LibationAvalonia/LibationAvalonia.csproj",
+                "-p:TargetFramework=net9.0",
+                "-p:TargetFrameworks=net9.0",
+                "-p:RuntimeIdentifier=linux-x64"
+            ],
+            "group": "build",
+            "presentation": {
+                //"reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
         }
     ]
 }

Docker/liberate.sh

@@ -124,7 +124,7 @@ main() {
   init_config_file Settings.json
   
   info "loading settings"
-  update_settings Settings.json Books /data
+  update_settings Settings.json Books "${LIBATION_BOOKS_DIR:-/data}"
   update_settings Settings.json InProgress /tmp
 
   info "loading database"

Documentation/FrequentlyAskedQuestions.md

@@ -7,6 +7,10 @@
 
 # Frequently Asked Questions
 
+## Q: Where can I get help for my specific problem?
+
+**A:** [You can open an issue here](https://github.com/rmcrackan/Libation/issues) for bug reports, feature requests, or specialized help.
+
 ## Q: What's the difference between 'Classic' and 'Chardonnay'?
 
 **A:** First and most importantly: Classic and Chardonnay have the exact same features.

Documentation/GettingStarted.md

@@ -15,6 +15,7 @@
 - [Download PDF attachments](#download-pdf-attachments)
 - [Details of downloaded files](#details-of-downloaded-files)
 - [Export your library](#export-your-library)
+- [I still need help](#i-still-need-help)
 
 
 
@@ -148,3 +149,7 @@ When you set up Libation, you'll specify a Books directory. Libation looks insid
 ![Export](images/Export.png)
 
 Export your library to Excel, CSV, or JSON
+
+### I still need help
+
+[You can open an issue here](https://github.com/rmcrackan/Libation/issues) for bug reports, feature requests, or specialized help.

Documentation/InstallOnLinux.md

@@ -8,23 +8,23 @@
 
 [![Packaging status](https://repology.org/badge/vertical-allrepos/libation.svg)](https://repology.org/project/libation/versions)
 
-New Libation releases are automatically packed into `.deb` and `.rpm` package and are available from the Libation repository's releases page.
+New Libation releases are automatically packed into `.deb` and `.rpm` package and are available from the [Libation repository's releases page](https://github.com/rmcrackan/Libation/releases).
 
-Run this command in your terminal to download and install Libation, replacing the url with the latest Libation package url:
+Run these commands in your terminal to download and install Libation. **Make sure you replace** `X.X.X` with the latest Libation version and `ARCH` with your CPU's architechture (either `amd64` or `arm64`).
 
 ### Debian
   ```Console
-  wget -O libation.deb https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay.deb &&
+  wget -O libation.deb https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay-ARCH.deb
   sudo apt install ./libation.deb
   ```
 ### Redhat and CentOS
   ```Console
-  wget -O libation.rpm https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay.rpm &&
+  wget -O libation.rpm https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay-ARCH.rpm
   sudo yum install ./libation.rpm
   ```
 ### Fedora
   ```Console
-  wget -O libation.rpm https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay.rpm &&
+  wget -O libation.rpm https://github.com/rmcrackan/Libation/releases/download/vX.X.X/Libation.X.X.X-linux-chardonnay-ARCH.rpm
   sudo dnf5 install ./libation.rpm
   ```
 ---

Documentation/LinuxDevelopmentSetupUsingNix.md

@@ -0,0 +1,64 @@
+# Development Environment Setup using Nix or Nix Flakes on Linux x86_64
+[Nix flakes](https://nixos.wiki/wiki/Flakes) can be used to provide version controlled reproducible and cross-platform development environments. The key files are:
+- `flake.nix`: Defines the flake inputs and outputs, including development shells.
+- `shell.nix`: This file defines the dependencies and additionally adds support for the Impure `nix-shell` method. This is used by the flake to create the dev environment.
+- `flake.lock`: Locks the versions of inputs for reproducibility.
+---
+## Prerequisites
+- [Nix](https://nixos.org/download.html) the package manager or NixOs installed on Linux (x86_64-linux)
+- Optional: flakes support enabled. 
+---
+## Using the Development Shell
+You have two primary ways to enter the development shell with Nix:
+### 1. Using `nix develop` (flake-native command)
+This is the recommended way if you have Nix with flakes support. Flake guarantee the versions of the dependencies and can be controlled through `flake.nix` and `flake.lock`.
+```
+nix develop
+```
+This will open a shell with all dependencies and environment configured as per the `flake.nix` for (`x86_64-linux`) systems only at this time.
+
+---
+### 2. Using `nix-shell` (that's why shell.nix is a separate file)
+If you want to use traditional `nix-shell` tooling which uses the nixpkgs version of your system:
+```
+nix-shell
+```
+This will drop you into the shell environment defined in `shell.nix`. Note that this is not flake-native method and does not use the locked nixpkgs in `flake.lock` so exact versions of the dependancies is not guaranteed.
+
+---
+## What’s inside the dev shell?
+- The environment variables and packages configured in `shell.nix` will be available.
+- The package set (`pkgs`) used aligns with the versions locked in `flake.lock` to ensure reproducibility.
+
+---
+## Example Workflow using flakes
+```
+# Navigate to the project root folder which contains the flake.nix, flake.lock and shell.nix files.
+cd /home/user/dev/Libation
+# Enter the flake development shell (Linux x86_64)
+nix develop
+# run VSCode or VSCodium from the current shell environment
+code .
+# Run or Debug using VSCode and VSCodium using the linux Launch configuration.
+```
+![Debug using VSCode and VSCodium](./images/StartingDebuggingInVSCode.png)
+
+You can also Build and run your application inside the shell.
+``` 
+dotnet build ./Source/LibationAvalonia/LibationAvalonia.csproj -p:TargetFrameworks=net9.0 -p:TargetFramework=net9.0 -p:RuntimeIdentifier=linux-x64
+```
+
+---
+
+## Notes
+- Leaving the current shell environemnt will drop all added dependancies and you will not be able to run or debug the program unless your system has those dependancies defined globally.
+- To exit the shell environment voluntarily use `exit` inside the shell.
+- Ensure you have no conflicting `nix.conf` or `global.json` that might affect SDK versions or runtime identifiers.
+- Keep your `flake.lock` file committed to ensure builds are reproducible for all collaborators.
+
+---
+## References
+
+- [Nix Flakes - NixOS Wiki](https://nixos.wiki/wiki/Flakes)
+- [Nix.dev - Introduction to Nix flakes](https://nix.dev/manual/nix/2.28/command-ref/new-cli/nix3-flake-init)
+- [Nix-shell Manual](https://nixos.org/manual/nix/stable/command-ref/nix-shell.html)

Documentation/NamingTemplates.md

@@ -46,9 +46,12 @@ These tags will be replaced in the template with the audiobook's values.
 |\<series\>|All series to which the book belongs (if any)|[Series List](#series-list-formatters)|
 |\<first series\>|First series|[Series](#series-formatters)|
 |\<series#\>|Number order in series (alias for \<first series[{#}]\>|[Number](#number-formatters)|
-|\<bitrate\>|File's original bitrate (Kbps)|[Number](#number-formatters)|
-|\<samplerate\>|File's original audio sample rate|[Number](#number-formatters)|
-|\<channels\>|Number of audio channels|[Number](#number-formatters)|
+|\<bitrate\>|Bitrate (kbps) of the last downloaded audiobook|[Number](#number-formatters)|
+|\<samplerate\>|Sample rate (Hz) of the last downloaded audiobook|[Number](#number-formatters)|
+|\<channels\>|Number of audio channels in the last downloaded audiobook|[Number](#number-formatters)|
+|\<codec\>|Audio codec of the last downloaded audiobook|[Text](#text-formatters)|
+|\<file version\>|Audible's file version number of the last downloaded audiobook|[Text](#text-formatters)|
+|\<libation version\>|Libation version used during last download of the audiobook|[Text](#text-formatters)|
 |\<account\>|Audible account of this book|[Text](#text-formatters)|
 |\<account nickname\>|Audible account nickname of this book|[Text](#text-formatters)|
 |\<locale\>|Region/country|[Text](#text-formatters)|

README.md

@@ -22,6 +22,7 @@
     - [Download PDF attachments](Documentation/GettingStarted.md#download-pdf-attachments)
     - [Details of downloaded files](Documentation/GettingStarted.md#details-of-downloaded-files)
     - [Export your library](Documentation/GettingStarted.md#export-your-library)
+    - If you still need help, [you can open an issue here](https://github.com/rmcrackan/Libation/issues) for bug reports, feature requests, or specialized help.
 - [Searching and filtering](Documentation/SearchingAndFiltering.md)
     - [Tags](Documentation/SearchingAndFiltering.md#tags)
     - [Searches](Documentation/SearchingAndFiltering.md#searches)

Source/AaxDecrypter/AaxDecrypter.csproj

@@ -13,7 +13,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-	  <PackageReference Include="AAXClean.Codecs" Version="2.0.1.2" />
+	  <PackageReference Include="AAXClean.Codecs" Version="2.0.2.2" />
 	</ItemGroup>
 
 	<ItemGroup>

Source/AaxDecrypter/AaxcDownloadConvertBase.cs

@@ -1,19 +1,21 @@
 using AAXClean;
 using System;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace AaxDecrypter
 {	
 	public abstract class AaxcDownloadConvertBase : AudiobookDownloadBase
 	{
-		public event EventHandler<AppleTags> RetrievedMetadata;
+		public event EventHandler<AppleTags>? RetrievedMetadata;
 
-		public Mp4File AaxFile { get; private set; }
-		protected Mp4Operation AaxConversion { get; set; }
+		public Mp4File? AaxFile { get; private set; }
+		protected Mp4Operation? AaxConversion { get; set; }
 
-		protected AaxcDownloadConvertBase(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
-			: base(outFileName, cacheDirectory, dlOptions) { }
+		protected AaxcDownloadConvertBase(string outDirectory, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outDirectory, cacheDirectory, dlOptions) { }
 
 		/// <summary>Setting cover art by this method will insert the art into the audiobook metadata</summary>
 		public override void SetCoverArt(byte[] coverArt)
@@ -25,18 +27,19 @@ namespace AaxDecrypter
 
 		public override async Task CancelAsync()
 		{
-			IsCanceled = true;
+			await base.CancelAsync();
 			await (AaxConversion?.CancelAsync() ?? Task.CompletedTask);
-			FinalizeDownload();
 		}
 
 		private Mp4File Open()
 		{
-			if (DownloadOptions.InputType is FileType.Dash)
+			if (DownloadOptions.DecryptionKeys is not KeyData[] keys || keys.Length == 0)
+				throw new InvalidOperationException($"{nameof(DownloadOptions.DecryptionKeys)} cannot be null or empty for a '{DownloadOptions.InputType}' file.");
+			else if (DownloadOptions.InputType is FileType.Dash)
 			{
 				//We may have multiple keys , so use the key whose key ID matches
 				//the dash files default Key ID.
-				var keyIds = DownloadOptions.DecryptionKeys.Select(k => new Guid(k.KeyPart1, bigEndian: true)).ToArray();
+				var keyIds = keys.Select(k => new Guid(k.KeyPart1, bigEndian: true)).ToArray();
 
 				var dash = new DashFile(InputFileStream);
 				var kidIndex = Array.IndexOf(keyIds, dash.Tenc.DefaultKID);
@@ -44,26 +47,38 @@ namespace AaxDecrypter
 				if (kidIndex == -1)
 					throw new InvalidOperationException($"None of the {keyIds.Length} key IDs match the dash file's default KeyID of {dash.Tenc.DefaultKID}");
 
-				DownloadOptions.DecryptionKeys[0] = DownloadOptions.DecryptionKeys[kidIndex];
-				var keyId = DownloadOptions.DecryptionKeys[kidIndex].KeyPart1;
-				var key = DownloadOptions.DecryptionKeys[kidIndex].KeyPart2;
-
+				keys[0] = keys[kidIndex];
+				var keyId = keys[kidIndex].KeyPart1;
+				var key = keys[kidIndex].KeyPart2 ?? throw new InvalidOperationException($"{nameof(DownloadOptions.DecryptionKeys)} for '{DownloadOptions.InputType}' must have a non-null decryption key (KeyPart2).");
 				dash.SetDecryptionKey(keyId, key);
+				WriteKeyFile($"KeyId={Convert.ToHexString(keyId)}{Environment.NewLine}Key={Convert.ToHexString(key)}");
 				return dash;
 			}
 			else if (DownloadOptions.InputType is FileType.Aax)
 			{
 				var aax = new AaxFile(InputFileStream);
-				aax.SetDecryptionKey(DownloadOptions.DecryptionKeys[0].KeyPart1);
+				var key = keys[0].KeyPart1;
+				aax.SetDecryptionKey(keys[0].KeyPart1);
+				WriteKeyFile($"ActivationBytes={Convert.ToHexString(key)}");
 				return aax;
 			}
 			else if (DownloadOptions.InputType is FileType.Aaxc)
 			{
 				var aax = new AaxFile(InputFileStream);
-				aax.SetDecryptionKey(DownloadOptions.DecryptionKeys[0].KeyPart1, DownloadOptions.DecryptionKeys[0].KeyPart2);
+				var key = keys[0].KeyPart1;
+				var iv = keys[0].KeyPart2 ?? throw new InvalidOperationException($"{nameof(DownloadOptions.DecryptionKeys)} for '{DownloadOptions.InputType}' must have a non-null initialization vector (KeyPart2).");
+				aax.SetDecryptionKey(keys[0].KeyPart1, iv);
+				WriteKeyFile($"Key={Convert.ToHexString(key)}{Environment.NewLine}IV={Convert.ToHexString(iv)}");
 				return aax;
 			}
 			else throw new InvalidOperationException($"{nameof(DownloadOptions.InputType)} of '{DownloadOptions.InputType}' is unknown.");
+
+			void WriteKeyFile(string contents)
+			{
+				var keyFile = Path.Combine(Path.ChangeExtension(InputFileStream.SaveFilePath, ".key"));
+				File.WriteAllText(keyFile, contents + Environment.NewLine);
+				OnTempFileCreated(new(keyFile));
+			}
 		}
 
 		protected bool Step_GetMetadata()
@@ -111,15 +126,15 @@ namespace AaxDecrypter
 				if (DownloadOptions.SeriesName is string series)
 					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "SERIES", series);
 
-				if (DownloadOptions.SeriesNumber is float part)
-					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "PART", part.ToString());
+				if (DownloadOptions.SeriesNumber is string part)
+					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "PART", part);
 			}
 
-			OnInitialized();
 			OnRetrievedTitle(AaxFile.AppleTags.TitleSansUnabridged);
 			OnRetrievedAuthors(AaxFile.AppleTags.FirstAuthor);
 			OnRetrievedNarrators(AaxFile.AppleTags.Narrator);
 			OnRetrievedCoverArt(AaxFile.AppleTags.Cover);
+			OnInitialized();
 
 			return !IsCanceled;
 		}

Source/AaxDecrypter/AaxcDownloadMultiConverter.cs

@@ -5,20 +5,20 @@ using System;
 using System.IO;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace AaxDecrypter
 {
 	public class AaxcDownloadMultiConverter : AaxcDownloadConvertBase
 	{
 		private static readonly TimeSpan minChapterLength = TimeSpan.FromSeconds(3);
-		private FileStream workingFileStream;
+		private FileStream? workingFileStream;
 
-		public AaxcDownloadMultiConverter(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
-			: base(outFileName, cacheDirectory, dlOptions)
+		public AaxcDownloadMultiConverter(string outDirectory, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outDirectory, cacheDirectory, dlOptions)
 		{
 			AsyncSteps.Name = $"Download, Convert Aaxc To {DownloadOptions.OutputFormat}, and Split";
 			AsyncSteps["Step 1: Get Aaxc Metadata"] = () => Task.Run(Step_GetMetadata);
 			AsyncSteps["Step 2: Download Decrypted Audiobook"] = Step_DownloadAndDecryptAudiobookAsync;
-			AsyncSteps["Step 3: Download Clips and Bookmarks"] = Step_DownloadClipsBookmarksAsync;
 		}
 
 		protected override void OnInitialized()
@@ -59,6 +59,7 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 		 */
 		protected async override Task<bool> Step_DownloadAndDecryptAudiobookAsync()
 		{
+			if (AaxFile is null) return false;
 			var chapters = DownloadOptions.ChapterInfo.Chapters;
 
 			// Ensure split files are at least minChapterLength in duration.
@@ -83,10 +84,10 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 
 			try
 			{
-				await (AaxConversion = decryptMultiAsync(splitChapters));
+				await (AaxConversion = decryptMultiAsync(AaxFile, splitChapters));
 
 				if (AaxConversion.IsCompletedSuccessfully)
-					await moveMoovToBeginning(workingFileStream?.Name);
+					await moveMoovToBeginning(AaxFile, workingFileStream?.Name);
 
 				return AaxConversion.IsCompletedSuccessfully;
 			}
@@ -97,17 +98,17 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 			}
 		}
 
-		private Mp4Operation decryptMultiAsync(ChapterInfo splitChapters)
+		private Mp4Operation decryptMultiAsync(Mp4File aaxFile, ChapterInfo splitChapters)
 		{
 			var chapterCount = 0;
 			return
 				DownloadOptions.OutputFormat == OutputFormat.M4b
-				? AaxFile.ConvertToMultiMp4aAsync
+				? aaxFile.ConvertToMultiMp4aAsync
 				(
 					splitChapters,
 					newSplitCallback => newSplit(++chapterCount, splitChapters, newSplitCallback)
 				)
-				: AaxFile.ConvertToMultiMp3Async
+				: aaxFile.ConvertToMultiMp3Async
 				(
 					splitChapters,
 					newSplitCallback => newSplit(++chapterCount, splitChapters, newSplitCallback),
@@ -116,33 +117,32 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 
 			void newSplit(int currentChapter, ChapterInfo splitChapters, INewSplitCallback newSplitCallback)
 			{
+				moveMoovToBeginning(aaxFile, workingFileStream?.Name).GetAwaiter().GetResult();
+				var newTempFile = GetNewTempFilePath(DownloadOptions.OutputFormat.ToString());
 				MultiConvertFileProperties props = new()
 				{
-					OutputFileName = OutputFileName,
+					OutputFileName = newTempFile.FilePath,
 					PartsPosition = currentChapter,
 					PartsTotal = splitChapters.Count,
-					Title = newSplitCallback?.Chapter?.Title,
+					Title = newSplitCallback.Chapter?.Title,
 				};
 
-				moveMoovToBeginning(workingFileStream?.Name).GetAwaiter().GetResult();
-
 				newSplitCallback.OutputFile = workingFileStream = createOutputFileStream(props);
 				newSplitCallback.TrackTitle = DownloadOptions.GetMultipartTitle(props);
 				newSplitCallback.TrackNumber = currentChapter;
 				newSplitCallback.TrackCount = splitChapters.Count;
 
-				OnFileCreated(workingFileStream.Name);
+				OnTempFileCreated(newTempFile with { PartProperties = props });
 			}
 
 			FileStream createOutputFileStream(MultiConvertFileProperties multiConvertFileProperties)
 			{
-				var fileName = DownloadOptions.GetMultipartFileName(multiConvertFileProperties);
-				FileUtility.SaferDelete(fileName);
-				return File.Open(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
+				FileUtility.SaferDelete(multiConvertFileProperties.OutputFileName);
+				return File.Open(multiConvertFileProperties.OutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
 			}
 		}
 
-		private Mp4Operation moveMoovToBeginning(string filename)
+		private Mp4Operation moveMoovToBeginning(Mp4File aaxFile, string? filename)
 		{
 			if (DownloadOptions.OutputFormat is OutputFormat.M4b
 				&& DownloadOptions.MoveMoovToBeginning
@@ -151,7 +151,7 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 			{
 				return Mp4File.RelocateMoovAsync(filename);
 			}
-			else return Mp4Operation.FromCompleted(AaxFile);
+			else return Mp4Operation.FromCompleted(aaxFile);
 		}
 	}
 }

Source/AaxDecrypter/AaxcDownloadSingleConverter.cs

@@ -6,13 +6,16 @@ using System;
 using System.IO;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace AaxDecrypter
 {
 	public class AaxcDownloadSingleConverter : AaxcDownloadConvertBase
 	{
 		private readonly AverageSpeed averageSpeed = new();
-		public AaxcDownloadSingleConverter(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
-			: base(outFileName, cacheDirectory, dlOptions)
+		private TempFile? outputTempFile;
+
+		public AaxcDownloadSingleConverter(string outDirectory, string cacheDirectory, IDownloadOptions dlOptions)
+			: base(outDirectory, cacheDirectory, dlOptions)
 		{
 			var step = 1;
 
@@ -21,7 +24,6 @@ namespace AaxDecrypter
 			AsyncSteps[$"Step {step++}: Download Decrypted Audiobook"] = Step_DownloadAndDecryptAudiobookAsync;
 			if (DownloadOptions.MoveMoovToBeginning && DownloadOptions.OutputFormat is OutputFormat.M4b)
 				AsyncSteps[$"Step {step++}: Move moov atom to beginning"] = Step_MoveMoov;
-			AsyncSteps[$"Step {step++}: Download Clips and Bookmarks"] = Step_DownloadClipsBookmarksAsync;
 			AsyncSteps[$"Step {step++}: Create Cue"] = Step_CreateCueAsync;
 		}
 
@@ -39,14 +41,16 @@ namespace AaxDecrypter
 
 		protected async override Task<bool> Step_DownloadAndDecryptAudiobookAsync()
 		{
-			FileUtility.SaferDelete(OutputFileName);
+			if (AaxFile is null) return false;
+			outputTempFile = GetNewTempFilePath(DownloadOptions.OutputFormat.ToString());
+			FileUtility.SaferDelete(outputTempFile.FilePath);
 
-			using var outputFile = File.Open(OutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
-			OnFileCreated(OutputFileName);
+			using var outputFile = File.Open(outputTempFile.FilePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
+			OnTempFileCreated(outputTempFile);
 
 			try
 			{
-				await (AaxConversion = decryptAsync(outputFile));				
+				await (AaxConversion = decryptAsync(AaxFile, outputFile));				
 
 				return AaxConversion.IsCompletedSuccessfully;
 			}
@@ -58,14 +62,15 @@ namespace AaxDecrypter
 
 		private async Task<bool> Step_MoveMoov()
 		{
-			AaxConversion = Mp4File.RelocateMoovAsync(OutputFileName);
+			if (outputTempFile is null) return false;
+			AaxConversion = Mp4File.RelocateMoovAsync(outputTempFile.FilePath);
 			AaxConversion.ConversionProgressUpdate += AaxConversion_MoovProgressUpdate;
 			await AaxConversion;
 			AaxConversion.ConversionProgressUpdate -= AaxConversion_MoovProgressUpdate;
 			return AaxConversion.IsCompletedSuccessfully;
 		}
 
-		private void AaxConversion_MoovProgressUpdate(object sender, ConversionProgressEventArgs e)
+		private void AaxConversion_MoovProgressUpdate(object? sender, ConversionProgressEventArgs e)
 		{
 			averageSpeed.AddPosition(e.ProcessPosition.TotalSeconds);
 
@@ -84,20 +89,20 @@ namespace AaxDecrypter
 				});
 		}
 
-		private Mp4Operation decryptAsync(Stream outputFile)
+		private Mp4Operation decryptAsync(Mp4File aaxFile, Stream outputFile)
 			=> DownloadOptions.OutputFormat == OutputFormat.Mp3
-			? AaxFile.ConvertToMp3Async
+			? aaxFile.ConvertToMp3Async
 			(
 				outputFile,
 				DownloadOptions.LameConfig,
 				DownloadOptions.ChapterInfo
 			)
 			: DownloadOptions.FixupFile
-			? AaxFile.ConvertToMp4aAsync
+			? aaxFile.ConvertToMp4aAsync
 			(
 				outputFile,
 				DownloadOptions.ChapterInfo
 			)
-			: AaxFile.ConvertToMp4aAsync(outputFile);
+			: aaxFile.ConvertToMp4aAsync(outputFile);
 	}
 }

Source/AaxDecrypter/AudiobookDownloadBase.cs

@@ -6,55 +6,50 @@ using System;
 using System.IO;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace AaxDecrypter
 {
 	public enum OutputFormat { M4b, Mp3 }
 
 	public abstract class AudiobookDownloadBase
 	{
-		public event EventHandler<string> RetrievedTitle;
-		public event EventHandler<string> RetrievedAuthors;
-		public event EventHandler<string> RetrievedNarrators;
-		public event EventHandler<byte[]> RetrievedCoverArt;
-		public event EventHandler<DownloadProgress> DecryptProgressUpdate;
-		public event EventHandler<TimeSpan> DecryptTimeRemaining;
-		public event EventHandler<string> FileCreated;
+		public event EventHandler<string?>? RetrievedTitle;
+		public event EventHandler<string?>? RetrievedAuthors;
+		public event EventHandler<string?>? RetrievedNarrators;
+		public event EventHandler<byte[]?>? RetrievedCoverArt;
+		public event EventHandler<DownloadProgress>? DecryptProgressUpdate;
+		public event EventHandler<TimeSpan>? DecryptTimeRemaining;
+		public event EventHandler<TempFile>? TempFileCreated;
 
 		public bool IsCanceled { get; protected set; }
 		protected AsyncStepSequence AsyncSteps { get; } = new();
-		protected string OutputFileName { get; }
+		protected string OutputDirectory { get; }
 		public IDownloadOptions DownloadOptions { get; }
-		protected NetworkFileStream InputFileStream => nfsPersister.NetworkFileStream;
+		protected NetworkFileStream InputFileStream => NfsPersister.NetworkFileStream;
 		protected virtual long InputFilePosition => InputFileStream.Position;
 		private bool downloadFinished;
 
-		private readonly NetworkFileStreamPersister nfsPersister;
+		private NetworkFileStreamPersister? m_nfsPersister;
+		private NetworkFileStreamPersister NfsPersister => m_nfsPersister ??= OpenNetworkFileStream();
 		private readonly DownloadProgress zeroProgress;
 		private readonly string jsonDownloadState;
 		private readonly string tempFilePath;
 
-		protected AudiobookDownloadBase(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
-		{
-			OutputFileName = ArgumentValidator.EnsureNotNullOrWhiteSpace(outFileName, nameof(outFileName));
+		protected AudiobookDownloadBase(string outDirectory, string cacheDirectory, IDownloadOptions dlOptions)
+		{			
+			OutputDirectory = ArgumentValidator.EnsureNotNullOrWhiteSpace(outDirectory, nameof(outDirectory));
+			DownloadOptions = ArgumentValidator.EnsureNotNull(dlOptions, nameof(dlOptions));
+			DownloadOptions.DownloadSpeedChanged += (_, speed) => InputFileStream.SpeedLimit = speed;
 
-			var outDir = Path.GetDirectoryName(OutputFileName);
-			if (!Directory.Exists(outDir))
-				Directory.CreateDirectory(outDir);
+			if (!Directory.Exists(OutputDirectory))
+				Directory.CreateDirectory(OutputDirectory);
 
 			if (!Directory.Exists(cacheDirectory))
 				Directory.CreateDirectory(cacheDirectory);
 
-			jsonDownloadState = Path.Combine(cacheDirectory, Path.GetFileName(Path.ChangeExtension(OutputFileName, ".json")));
+			jsonDownloadState = Path.Combine(cacheDirectory, $"{DownloadOptions.AudibleProductId}.json");
 			tempFilePath = Path.ChangeExtension(jsonDownloadState, ".aaxc");
 
-			DownloadOptions = ArgumentValidator.EnsureNotNull(dlOptions, nameof(dlOptions));
-			DownloadOptions.DownloadSpeedChanged += (_, speed) => InputFileStream.SpeedLimit = speed;
-
-			// delete file after validation is complete
-			FileUtility.SaferDelete(OutputFileName);
-
-			nfsPersister = OpenNetworkFileStream();
-
 			zeroProgress = new DownloadProgress
 			{
 				BytesReceived = 0,
@@ -65,24 +60,30 @@ namespace AaxDecrypter
 			OnDecryptProgressUpdate(zeroProgress);
 		}
 
+		protected TempFile GetNewTempFilePath(string extension)
+		{
+			extension = FileUtility.GetStandardizedExtension(extension);
+			var path = Path.Combine(OutputDirectory, Guid.NewGuid().ToString("N") + extension);
+			return new(path, extension);
+		}
+
 		public async Task<bool> RunAsync()
 		{
 			await InputFileStream.BeginDownloadingAsync();
 			var progressTask = Task.Run(reportProgress);
 
-			AsyncSteps[$"Cleanup"] = CleanupAsync;
 			(bool success, var elapsed) = await AsyncSteps.RunAsync();
 
 			//Stop the downloader so it doesn't keep running in the background.
 			if (!success)
-				nfsPersister.Dispose();
+				NfsPersister.Dispose();
 
 			await progressTask;
 
 			var speedup = DownloadOptions.RuntimeLength / elapsed;
 			Serilog.Log.Information($"Speedup is {speedup:F0}x realtime.");
 
-			nfsPersister.Dispose();
+			NfsPersister.Dispose();
 			return success;
 
 			async Task reportProgress()
@@ -120,54 +121,52 @@ namespace AaxDecrypter
 			}
 		}
 
-		public abstract Task CancelAsync();
+		public virtual Task CancelAsync()
+		{
+			IsCanceled = true;
+			FinalizeDownload();
+			return Task.CompletedTask;
+		}
 		protected abstract Task<bool> Step_DownloadAndDecryptAudiobookAsync();
 
 		public virtual void SetCoverArt(byte[] coverArt) { }
-
-		protected void OnRetrievedTitle(string title)
+		protected void OnRetrievedTitle(string? title)
 			=> RetrievedTitle?.Invoke(this, title);
-		protected void OnRetrievedAuthors(string authors)
+		protected void OnRetrievedAuthors(string? authors)
 			=> RetrievedAuthors?.Invoke(this, authors);
-		protected void OnRetrievedNarrators(string narrators)
+		protected void OnRetrievedNarrators(string? narrators)
 			=> RetrievedNarrators?.Invoke(this, narrators);
-		protected void OnRetrievedCoverArt(byte[] coverArt)
+		protected void OnRetrievedCoverArt(byte[]? coverArt)
 			=> RetrievedCoverArt?.Invoke(this, coverArt);
 		protected void OnDecryptProgressUpdate(DownloadProgress downloadProgress)
 			=> DecryptProgressUpdate?.Invoke(this, downloadProgress);
 		protected void OnDecryptTimeRemaining(TimeSpan timeRemaining)
 			=> DecryptTimeRemaining?.Invoke(this, timeRemaining);
-		protected void OnFileCreated(string path)
-			=> FileCreated?.Invoke(this, path);
+		public void OnTempFileCreated(TempFile path)
+			=> TempFileCreated?.Invoke(this, path);
 
 		protected virtual void FinalizeDownload()
 		{
-			nfsPersister?.Dispose();
+			NfsPersister.Dispose();
 			downloadFinished = true;
 		}
 
-		protected async Task<bool> Step_DownloadClipsBookmarksAsync()
-		{
-			if (!IsCanceled && DownloadOptions.DownloadClipsBookmarks)
-			{
-				var recordsFile = await DownloadOptions.SaveClipsAndBookmarksAsync(OutputFileName);
-
-				if (File.Exists(recordsFile))
-					OnFileCreated(recordsFile);
-			}
-			return !IsCanceled;
-		}
-
 		protected async Task<bool> Step_CreateCueAsync()
 		{
 			if (!DownloadOptions.CreateCueSheet) return !IsCanceled;
 
+			if (DownloadOptions.ChapterInfo.Count <= 1)
+			{
+				Serilog.Log.Logger.Information($"Skipped creating .cue because book has no chapters.");
+				return !IsCanceled;
+			}
+
 			// not a critical step. its failure should not prevent future steps from running
 			try
 			{
-				var path = Path.ChangeExtension(OutputFileName, ".cue");
-				await File.WriteAllTextAsync(path, Cue.CreateContents(Path.GetFileName(OutputFileName), DownloadOptions.ChapterInfo));
-				OnFileCreated(path);
+				var tempFile = GetNewTempFilePath(".cue");
+				await File.WriteAllTextAsync(tempFile.FilePath, Cue.CreateContents(Path.GetFileName(tempFile.FilePath), DownloadOptions.ChapterInfo));
+				OnTempFileCreated(tempFile);
 			}
 			catch (Exception ex)
 			{
@@ -176,58 +175,9 @@ namespace AaxDecrypter
 			return !IsCanceled;
 		}
 
-		private async Task<bool> CleanupAsync()
-		{
-			if (IsCanceled) return false;
-
-			FileUtility.SaferDelete(jsonDownloadState);
-
-			if (DownloadOptions.DecryptionKeys != null &&
-				DownloadOptions.RetainEncryptedFile &&
-				DownloadOptions.InputType is AAXClean.FileType fileType)
-			{
-				//Write aax decryption key
-				string keyPath = Path.ChangeExtension(tempFilePath, ".key");
-				FileUtility.SaferDelete(keyPath);
-				string aaxPath;
-
-				if (fileType is AAXClean.FileType.Aax)
-				{
-					await File.WriteAllTextAsync(keyPath, $"ActivationBytes={Convert.ToHexString(DownloadOptions.DecryptionKeys[0].KeyPart1)}");
-					aaxPath = Path.ChangeExtension(tempFilePath, ".aax");
-				}
-				else if (fileType is AAXClean.FileType.Aaxc)
-				{
-					await File.WriteAllTextAsync(keyPath,
-						$"Key={Convert.ToHexString(DownloadOptions.DecryptionKeys[0].KeyPart1)}{Environment.NewLine}" +
-						$"IV={Convert.ToHexString(DownloadOptions.DecryptionKeys[0].KeyPart2)}");
-					aaxPath = Path.ChangeExtension(tempFilePath, ".aaxc");
-				}
-				else if (fileType is AAXClean.FileType.Dash)
-				{
-					await File.WriteAllTextAsync(keyPath,
-						$"KeyId={Convert.ToHexString(DownloadOptions.DecryptionKeys[0].KeyPart1)}{Environment.NewLine}" +
-						$"Key={Convert.ToHexString(DownloadOptions.DecryptionKeys[0].KeyPart2)}");
-					aaxPath = Path.ChangeExtension(tempFilePath, ".dash");
-				}
-				else
-					throw new InvalidOperationException($"Unknown file type: {fileType}");
-
-				if (tempFilePath != aaxPath)
-					FileUtility.SaferMove(tempFilePath, aaxPath);
-
-				OnFileCreated(aaxPath);
-				OnFileCreated(keyPath);
-			}
-			else
-				FileUtility.SaferDelete(tempFilePath);
-
-			return !IsCanceled;
-		}
-
 		private NetworkFileStreamPersister OpenNetworkFileStream()
 		{
-			NetworkFileStreamPersister nfsp = default;
+			NetworkFileStreamPersister? nfsp = default;
 			try
 			{
 				if (!File.Exists(jsonDownloadState))
@@ -248,8 +198,14 @@ namespace AaxDecrypter
 			}
 			finally
 			{
-				nfsp.NetworkFileStream.RequestHeaders["User-Agent"] = DownloadOptions.UserAgent;
-				nfsp.NetworkFileStream.SpeedLimit = DownloadOptions.DownloadSpeedBps;
+				//nfsp will only be null when an unhandled exception occurs. Let the caller handle it.
+				if (nfsp is not null)
+				{
+					nfsp.NetworkFileStream.RequestHeaders["User-Agent"] = DownloadOptions.UserAgent;
+					nfsp.NetworkFileStream.SpeedLimit = DownloadOptions.DownloadSpeedBps;
+					OnTempFileCreated(new(tempFilePath, DownloadOptions.InputType.ToString()));
+					OnTempFileCreated(new(jsonDownloadState));
+				}
 			}
 
 			NetworkFileStreamPersister newNetworkFilePersister()

Source/AaxDecrypter/IDownloadOptions.cs

@@ -1,6 +1,5 @@
 using AAXClean;
 using System;
-using System.Threading.Tasks;
 
 #nullable enable
 namespace AaxDecrypter
@@ -19,9 +18,9 @@ namespace AaxDecrypter
         public KeyData(string keyPart1, string? keyPart2 = null)
         {
             ArgumentNullException.ThrowIfNull(keyPart1, nameof(keyPart1));
-            KeyPart1 = Convert.FromBase64String(keyPart1);
+            KeyPart1 = Convert.FromHexString(keyPart1);
             if (keyPart2 != null)
-                KeyPart2 = Convert.FromBase64String(keyPart2);
+                KeyPart2 = Convert.FromHexString(keyPart2);
         }
 	}    
 
@@ -33,11 +32,8 @@ namespace AaxDecrypter
 		KeyData[]? DecryptionKeys { get; }
         TimeSpan RuntimeLength { get; }
         OutputFormat OutputFormat { get; }
-        bool TrimOutputToChapterLength { get; }
-        bool RetainEncryptedFile { get; }
         bool StripUnabridged { get; }
         bool CreateCueSheet { get; }
-        bool DownloadClipsBookmarks { get; }
         long DownloadSpeedBps { get; }
         ChapterInfo ChapterInfo { get; }
         bool FixupFile { get; }
@@ -47,14 +43,12 @@ namespace AaxDecrypter
 		string? Publisher { get; }
 		string? Language { get; }
 		string? SeriesName { get; }
-		float? SeriesNumber { get; }
+		string? SeriesNumber { get; }
 		NAudio.Lame.LameConfig? LameConfig { get; }
         bool Downsample { get; }
         bool MatchSourceBitrate { get; }
         bool MoveMoovToBeginning { get; }
-        string GetMultipartFileName(MultiConvertFileProperties props);
         string GetMultipartTitle(MultiConvertFileProperties props);
-        Task<string> SaveClipsAndBookmarksAsync(string fileName);
         public FileType? InputType { get; }
     }
 }

Source/AaxDecrypter/NetworkFileStream.cs

@@ -100,6 +100,12 @@ namespace AaxDecrypter
 				Position = WritePosition
 			};
 
+			if (_writeFile.Length < WritePosition)
+			{
+				_writeFile.Dispose();
+				throw new InvalidDataException($"{SaveFilePath} file length is shorter than {WritePosition}");
+			}
+
 			_readFile = new FileStream(SaveFilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
 
 			SetUriForSameFile(uri);

Source/AaxDecrypter/TempFile.cs

@@ -0,0 +1,17 @@
+using FileManager;
+
+#nullable enable
+namespace AaxDecrypter;
+
+public record TempFile
+{
+	public LongPath FilePath { get; init; }
+	public string Extension { get; }
+	public MultiConvertFileProperties? PartProperties { get; init; }
+	public TempFile(LongPath filePath, string? extension = null)
+	{
+		FilePath = filePath;
+		extension ??= System.IO.Path.GetExtension(filePath);
+		Extension = FileUtility.GetStandardizedExtension(extension).ToLowerInvariant();
+	}
+}

Source/AaxDecrypter/UnencryptedAudiobookDownloader.cs

@@ -1,5 +1,4 @@
 using FileManager;
-using System;
 using System.Threading.Tasks;
 
 namespace AaxDecrypter
@@ -8,20 +7,12 @@ namespace AaxDecrypter
 	{
 		protected override long InputFilePosition => InputFileStream.WritePosition;
 
-		public UnencryptedAudiobookDownloader(string outFileName, string cacheDirectory, IDownloadOptions dlLic)
-			: base(outFileName, cacheDirectory, dlLic)
+		public UnencryptedAudiobookDownloader(string outDirectory, string cacheDirectory, IDownloadOptions dlLic)
+			: base(outDirectory, cacheDirectory, dlLic)
 		{
 			AsyncSteps.Name = "Download Unencrypted Audiobook";
 			AsyncSteps["Step 1: Download Audiobook"] = Step_DownloadAndDecryptAudiobookAsync;
-			AsyncSteps["Step 2: Download Clips and Bookmarks"] = Step_DownloadClipsBookmarksAsync;
-			AsyncSteps["Step 3: Create Cue"] = Step_CreateCueAsync;
-		}
-
-		public override Task CancelAsync()
-		{
-			IsCanceled = true;
-			FinalizeDownload();
-			return Task.CompletedTask;
+			AsyncSteps["Step 2: Create Cue"] = Step_CreateCueAsync;
 		}
 
 		protected override async Task<bool> Step_DownloadAndDecryptAudiobookAsync()
@@ -33,8 +24,9 @@ namespace AaxDecrypter
 			else
 			{
 				FinalizeDownload();
-				FileUtility.SaferMove(InputFileStream.SaveFilePath, OutputFileName);
-				OnFileCreated(OutputFileName);
+				var tempFile = GetNewTempFilePath(DownloadOptions.OutputFormat.ToString());
+				FileUtility.SaferMove(InputFileStream.SaveFilePath, tempFile.FilePath);
+				OnTempFileCreated(tempFile);
 				return true;
 			}
 		}

Source/AppScaffolding/AppScaffolding.csproj

@@ -2,15 +2,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net9.0</TargetFramework>
-    <Version>12.4.2.1</Version>
+    <Version>12.5.0.1</Version>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Octokit" Version="14.0.0" />
     <!-- Do not remove unused Serilog.Sinks -->
-    <!-- Only ZipFile sink is currently used. By user request (June 2024) others packages are included for experimental use. -->
+    <!-- Only File sink is currently used. By user request (June 2024) others packages are included for experimental use. -->
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
-    <PackageReference Include="Serilog.Sinks.ZipFile" Version="3.1.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\ApplicationServices\ApplicationServices.csproj" />

Source/AppScaffolding/LibationScaffolding.cs

@@ -115,11 +115,22 @@ namespace AppScaffolding
 		{
 			if (config.GetObject("Serilog") is JObject serilog)
 			{
-				if (serilog["WriteTo"] is JArray sinks && sinks.FirstOrDefault(s => s["Name"].Value<string>() is "File") is JToken fileSink)
+				bool fileChanged = false;
+				if (serilog.SelectToken("$.WriteTo[?(@.Name == 'ZipFile')]", false) is JObject zipFileSink)
 				{
-					fileSink["Name"] = "ZipFile";
-					config.SetNonString(serilog.DeepClone(), "Serilog");
+					zipFileSink["Name"] = "File";
+					fileChanged = true;
 				}
+				var hooks = typeof(FileSinkHook).AssemblyQualifiedName;
+				if (serilog.SelectToken("$.WriteTo[?(@.Name == 'File')].Args", false) is JObject fileSinkArgs
+					&& fileSinkArgs["hooks"]?.Value<string>() != hooks)
+				{
+					fileSinkArgs["hooks"] = hooks;
+					fileChanged = true;
+				}
+
+				if (fileChanged)
+					config.SetNonString(serilog.DeepClone(), "Serilog");
 				return;
 			}
 
@@ -129,17 +140,17 @@ namespace AppScaffolding
 				{ "WriteTo", new JArray
 					{
 						// ABOUT SINKS
-						// Only ZipFile sink is currently used. By user request (June 2024) others packages are included for experimental use.
+						// Only File sink is currently used. By user request (June 2024) others packages are included for experimental use.
 
 						// new JObject { {"Name", "Console" } }, // this has caused more problems than it's solved
 						new JObject
 						{
-							{ "Name", "ZipFile" },
+							{ "Name", "File" },
 							{ "Args",
 								new JObject
 								{
 									// for this sink to work, a path must be provided. we override this below
-									{ "path", Path.Combine(config.LibationFiles, "_Log.log") },
+									{ "path", Path.Combine(config.LibationFiles, "Log.log") },
 									{ "rollingInterval", "Month" },
 									// Serilog template formatting examples
 									// - default:                    "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}"
@@ -147,7 +158,8 @@ namespace AppScaffolding
 									// - with class and method info: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception}";
 									//   output example:             2019-11-26 08:48:40.224 -05:00 [DBG] (at LibationWinForms.Program.init()) Begin Libation
 									// {Properties:j} needed for expanded exception logging
-									{ "outputTemplate", "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception} {Properties:j}" }
+									{ "outputTemplate", "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception} {Properties:j}" },
+									{ "hooks", typeof(FileSinkHook).AssemblyQualifiedName }, // for FileSinkHook
 								}
 							}
 						}
@@ -274,7 +286,7 @@ namespace AppScaffolding
                 disableIPv6 = AppContext.TryGetSwitch("System.Net.DisableIPv6", out bool disableIPv6Value),
 			});
 
-            if (InteropFactory.InteropFunctionsType is null)
+			if (InteropFactory.InteropFunctionsType is null)
                 Serilog.Log.Logger.Warning("WARNING: OSInteropProxy.InteropFunctionsType is null");
         }
 
@@ -290,33 +302,24 @@ namespace AppScaffolding
 		public static UpgradeProperties GetLatestRelease()
 		{
 			// timed out
-			(var latest, var zip) = getLatestRelease(TimeSpan.FromSeconds(10));
+			(var version, var latest, var zip) = getLatestRelease(TimeSpan.FromSeconds(10));
 
-			if (latest is null || zip is null)
-				return null;
-
-			var latestVersionString = latest.TagName.Trim('v');
-			if (!Version.TryParse(latestVersionString, out var latestRelease))
-				return null;
-
-			// we're up to date
-			if (latestRelease <= BuildVersion)
+			if (version is null || latest is null || zip is null)
 				return null;
 
 			// we have an update
-
 			var zipUrl = zip?.BrowserDownloadUrl;
 
 			Log.Logger.Information("Update available: {@DebugInfo}", new
 			{
-				latestRelease = latestRelease.ToString(),
+				latestRelease = version.ToString(),
 				latest.HtmlUrl,
 				zipUrl
 			});
 
-			return new(zipUrl, latest.HtmlUrl, zip.Name, latestRelease, latest.Body);
+			return new(zipUrl, latest.HtmlUrl, zip.Name, version, latest.Body);
 		}
-		private static (Octokit.Release, Octokit.ReleaseAsset) getLatestRelease(TimeSpan timeout)
+		private static (Version releaseVersion, Octokit.Release, Octokit.ReleaseAsset) getLatestRelease(TimeSpan timeout)
 		{
 			try
 			{
@@ -330,15 +333,23 @@ namespace AppScaffolding
 			{
 				Log.Logger.Error(aggEx, "Checking for new version too often");
 			}
-			return (null, null);
+			return (null, null, null);
 		}
-		private static async System.Threading.Tasks.Task<(Octokit.Release, Octokit.ReleaseAsset)> getLatestRelease()
+		private static async System.Threading.Tasks.Task<(Version releaseVersion, Octokit.Release, Octokit.ReleaseAsset)> getLatestRelease()
 		{
 			const string ownerAccount = "rmcrackan";
 			const string repoName = "Libation";
 
 			var gitHubClient = new Octokit.GitHubClient(new Octokit.ProductHeaderValue(repoName));
 
+			//https://docs.github.com/en/rest/releases/releases?apiVersion=2022-11-28#get-the-latest-release
+			var latestRelease = await gitHubClient.Repository.Release.GetLatest(ownerAccount, repoName);
+
+			//Ensure that latest release is greater than the current version
+			var latestVersionString = latestRelease.TagName.Trim('v');
+			if (!Version.TryParse(latestVersionString, out var releaseVersion) || releaseVersion <= BuildVersion)
+				return (null, null, null);
+
 			//Download the release index
 			var bts = await gitHubClient.Repository.Content.GetRawContent(ownerAccount, repoName, ".releaseindex.json");
 			var releaseIndex = JObject.Parse(System.Text.Encoding.ASCII.GetString(bts));
@@ -356,10 +367,7 @@ namespace AppScaffolding
 
 			var regex = new System.Text.RegularExpressions.Regex(regexPattern, System.Text.RegularExpressions.RegexOptions.IgnoreCase);
 
-			//https://docs.github.com/en/rest/releases/releases?apiVersion=2022-11-28#get-the-latest-release
-			var latestRelease = await gitHubClient.Repository.Release.GetLatest(ownerAccount, repoName);
-
-			return (latestRelease, latestRelease?.Assets?.FirstOrDefault(a => regex.IsMatch(a.Name)));
+			return (releaseVersion, latestRelease, latestRelease?.Assets?.FirstOrDefault(a => regex.IsMatch(a.Name)));
 		}
 	}
 

Source/ApplicationServices/ApplicationServices.csproj

@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CsvHelper" Version="33.0.1" />
-    <PackageReference Include="NPOI" Version="2.7.3" />
+    <PackageReference Include="CsvHelper" Version="33.1.0" />
+    <PackageReference Include="NPOI" Version="2.7.4" />
   </ItemGroup>
 
   <ItemGroup>

Source/ApplicationServices/LibraryCommands.cs

@@ -521,8 +521,8 @@ namespace ApplicationServices
                         udi.UpdateRating(rating.OverallRating, rating.PerformanceRating, rating.StoryRating);
 				});
 
-        public static int UpdateBookStatus(this LibraryBook lb, LiberatedStatus bookStatus, Version libationVersion)
-            => lb.UpdateUserDefinedItem(udi => { udi.BookStatus = bookStatus; udi.SetLastDownloaded(libationVersion); });
+        public static int UpdateBookStatus(this LibraryBook lb, LiberatedStatus bookStatus, Version? libationVersion, AudioFormat audioFormat, string audioVersion)
+            => lb.UpdateUserDefinedItem(udi => { udi.BookStatus = bookStatus; udi.SetLastDownloaded(libationVersion, audioFormat, audioVersion); });
 
         public static int UpdateBookStatus(this LibraryBook libraryBook, LiberatedStatus bookStatus)
             => libraryBook.UpdateUserDefinedItem(udi => udi.BookStatus = bookStatus);

Source/ApplicationServices/LibraryExporter.cs

@@ -4,8 +4,8 @@ using System.Linq;
 using CsvHelper;
 using CsvHelper.Configuration.Attributes;
 using DataLayer;
+using Newtonsoft.Json;
 using NPOI.XSSF.UserModel;
-using Serilog;
 
 namespace ApplicationServices
 {
@@ -115,7 +115,29 @@ namespace ApplicationServices
 
 		[Name("IsFinished")]
         public bool IsFinished { get; set; }
-    }
+
+		[Name("IsSpatial")]
+		public bool IsSpatial { get; set; }
+
+		[Name("Last Downloaded File Version")]
+		public string LastDownloadedFileVersion { get; set; }
+
+		[Ignore /* csv ignore */]
+		public AudioFormat LastDownloadedFormat { get; set; }
+
+		[Name("Last Downloaded Codec"), JsonIgnore]
+		public string CodecString => LastDownloadedFormat?.CodecString ?? "";
+
+		[Name("Last Downloaded Sample rate"), JsonIgnore]
+		public int? SampleRate => LastDownloadedFormat?.SampleRate;
+
+		[Name("Last Downloaded Audio Channels"), JsonIgnore]
+		public int? ChannelCount => LastDownloadedFormat?.ChannelCount;
+
+		[Name("Last Downloaded Bitrate"), JsonIgnore]
+		public int? BitRate => LastDownloadedFormat?.BitRate;
+	}
+
 	public static class LibToDtos
 	{
 		public static List<ExportDto> ToDtos(this IEnumerable<LibraryBook> library)
@@ -135,16 +157,16 @@ namespace ApplicationServices
 				HasPdf = a.Book.HasPdf(),
 				SeriesNames = a.Book.SeriesNames(),
 				SeriesOrder = a.Book.SeriesLink.Any() ? a.Book.SeriesLink?.Select(sl => $"{sl.Order} : {sl.Series.Name}").Aggregate((a, b) => $"{a}, {b}") : "",
-				CommunityRatingOverall = a.Book.Rating?.OverallRating,
-				CommunityRatingPerformance = a.Book.Rating?.PerformanceRating,
-				CommunityRatingStory = a.Book.Rating?.StoryRating,
+				CommunityRatingOverall = a.Book.Rating?.OverallRating.ZeroIsNull(),
+				CommunityRatingPerformance = a.Book.Rating?.PerformanceRating.ZeroIsNull(),
+				CommunityRatingStory = a.Book.Rating?.StoryRating.ZeroIsNull(),
 				PictureId = a.Book.PictureId,
 				IsAbridged = a.Book.IsAbridged,
 				DatePublished = a.Book.DatePublished,
 				CategoriesNames = string.Join("; ", a.Book.LowestCategoryNames()),
-				MyRatingOverall = a.Book.UserDefinedItem.Rating.OverallRating,
-				MyRatingPerformance = a.Book.UserDefinedItem.Rating.PerformanceRating,
-				MyRatingStory = a.Book.UserDefinedItem.Rating.StoryRating,
+				MyRatingOverall = a.Book.UserDefinedItem.Rating.OverallRating.ZeroIsNull(),
+				MyRatingPerformance = a.Book.UserDefinedItem.Rating.PerformanceRating.ZeroIsNull(),
+				MyRatingStory = a.Book.UserDefinedItem.Rating.StoryRating.ZeroIsNull(),
 				MyLibationTags = a.Book.UserDefinedItem.Tags,
 				BookStatus = a.Book.UserDefinedItem.BookStatus.ToString(),
 				PdfStatus = a.Book.UserDefinedItem.PdfStatus.ToString(),
@@ -152,8 +174,13 @@ namespace ApplicationServices
 				Language = a.Book.Language,
 				LastDownloaded = a.Book.UserDefinedItem.LastDownloaded,
 				LastDownloadedVersion = a.Book.UserDefinedItem.LastDownloadedVersion?.ToString() ?? "",
-                IsFinished = a.Book.UserDefinedItem.IsFinished
-            }).ToList();
+				IsFinished = a.Book.UserDefinedItem.IsFinished,
+				IsSpatial = a.Book.IsSpatial,
+				LastDownloadedFileVersion = a.Book.UserDefinedItem.LastDownloadedFileVersion ?? "",
+				LastDownloadedFormat = a.Book.UserDefinedItem.LastDownloadedFormat
+			}).ToList();
+
+		private static float? ZeroIsNull(this float value) => value is 0 ? null : value;
 	}
 	public static class LibraryExporter
 	{
@@ -162,7 +189,6 @@ namespace ApplicationServices
 			var dtos = DbContexts.GetLibrary_Flat_NoTracking().ToDtos();
 			if (!dtos.Any())
 				return;
-
 			using var writer = new System.IO.StreamWriter(saveFilePath);
 			using var csv = new CsvWriter(writer, System.Globalization.CultureInfo.CurrentCulture);
 
@@ -174,7 +200,7 @@ namespace ApplicationServices
 		public static void ToJson(string saveFilePath)
 		{
 			var dtos = DbContexts.GetLibrary_Flat_NoTracking().ToDtos();
-			var json = Newtonsoft.Json.JsonConvert.SerializeObject(dtos, Newtonsoft.Json.Formatting.Indented);
+			var json = JsonConvert.SerializeObject(dtos, Formatting.Indented);
 			System.IO.File.WriteAllText(saveFilePath, json);
 		}
 
@@ -227,7 +253,13 @@ namespace ApplicationServices
                 nameof(ExportDto.Language),
                 nameof(ExportDto.LastDownloaded),
                 nameof(ExportDto.LastDownloadedVersion),
-                nameof(ExportDto.IsFinished)
+                nameof(ExportDto.IsFinished),
+                nameof(ExportDto.IsSpatial),
+                nameof(ExportDto.LastDownloadedFileVersion),
+                nameof(ExportDto.CodecString),
+                nameof(ExportDto.SampleRate),
+                nameof(ExportDto.ChannelCount),
+                nameof(ExportDto.BitRate)
             };
 			var col = 0;
 			foreach (var c in columns)
@@ -248,15 +280,10 @@ namespace ApplicationServices
 			foreach (var dto in dtos)
 			{
 				col = 0;
-
-				row = sheet.CreateRow(rowIndex);
+				row = sheet.CreateRow(rowIndex++);
 
 				row.CreateCell(col++).SetCellValue(dto.Account);
-
-				var dateCell = row.CreateCell(col++);
-				dateCell.CellStyle = dateStyle;
-				dateCell.SetCellValue(dto.DateAdded);
-
+				row.CreateCell(col++).SetCellValue(dto.DateAdded).CellStyle = dateStyle;
 				row.CreateCell(col++).SetCellValue(dto.AudibleProductId);
 				row.CreateCell(col++).SetCellValue(dto.Locale);
 				row.CreateCell(col++).SetCellValue(dto.Title);
@@ -269,56 +296,46 @@ namespace ApplicationServices
 				row.CreateCell(col++).SetCellValue(dto.HasPdf);
 				row.CreateCell(col++).SetCellValue(dto.SeriesNames);
 				row.CreateCell(col++).SetCellValue(dto.SeriesOrder);
-
-				col = createCell(row, col, dto.CommunityRatingOverall);
-				col = createCell(row, col, dto.CommunityRatingPerformance);
-				col = createCell(row, col, dto.CommunityRatingStory);
-
+				row.CreateCell(col++).SetCellValue(dto.CommunityRatingOverall);
+				row.CreateCell(col++).SetCellValue(dto.CommunityRatingPerformance);
+				row.CreateCell(col++).SetCellValue(dto.CommunityRatingStory);
 				row.CreateCell(col++).SetCellValue(dto.PictureId);
 				row.CreateCell(col++).SetCellValue(dto.IsAbridged);
-
-				var datePubCell = row.CreateCell(col++);
-				datePubCell.CellStyle = dateStyle;
-				if (dto.DatePublished.HasValue)
-					datePubCell.SetCellValue(dto.DatePublished.Value);
-				else
-					datePubCell.SetCellValue("");
-
+				row.CreateCell(col++).SetCellValue(dto.DatePublished).CellStyle = dateStyle;
 				row.CreateCell(col++).SetCellValue(dto.CategoriesNames);
-
-				col = createCell(row, col, dto.MyRatingOverall);
-				col = createCell(row, col, dto.MyRatingPerformance);
-				col = createCell(row, col, dto.MyRatingStory);
-
+				row.CreateCell(col++).SetCellValue(dto.MyRatingOverall);
+				row.CreateCell(col++).SetCellValue(dto.MyRatingPerformance);
+				row.CreateCell(col++).SetCellValue(dto.MyRatingStory);
 				row.CreateCell(col++).SetCellValue(dto.MyLibationTags);
 				row.CreateCell(col++).SetCellValue(dto.BookStatus);
 				row.CreateCell(col++).SetCellValue(dto.PdfStatus);
 				row.CreateCell(col++).SetCellValue(dto.ContentType);
-                row.CreateCell(col++).SetCellValue(dto.Language);
-
-				if (dto.LastDownloaded.HasValue)
-				{
-					dateCell = row.CreateCell(col);
-					dateCell.CellStyle = dateStyle;
-					dateCell.SetCellValue(dto.LastDownloaded.Value);
-				}
-
-                row.CreateCell(++col).SetCellValue(dto.LastDownloadedVersion);
-                row.CreateCell(++col).SetCellValue(dto.IsFinished);
-
-                rowIndex++;
+				row.CreateCell(col++).SetCellValue(dto.Language);
+				row.CreateCell(col++).SetCellValue(dto.LastDownloaded).CellStyle = dateStyle;
+				row.CreateCell(col++).SetCellValue(dto.LastDownloadedVersion);
+				row.CreateCell(col++).SetCellValue(dto.IsFinished);
+				row.CreateCell(col++).SetCellValue(dto.IsSpatial);
+				row.CreateCell(col++).SetCellValue(dto.LastDownloadedFileVersion);
+				row.CreateCell(col++).SetCellValue(dto.CodecString);
+				row.CreateCell(col++).SetCellValue(dto.SampleRate);
+				row.CreateCell(col++).SetCellValue(dto.ChannelCount);
+				row.CreateCell(col++).SetCellValue(dto.BitRate);
 			}
 
 			using var fileData = new System.IO.FileStream(saveFilePath, System.IO.FileMode.Create);
 			workbook.Write(fileData);
 		}
-		private static int createCell(NPOI.SS.UserModel.IRow row, int col, float? nullableFloat)
-		{
-			if (nullableFloat.HasValue)
-				row.CreateCell(col++).SetCellValue(nullableFloat.Value);
-			else
-				row.CreateCell(col++).SetCellValue("");
-			return col;
-		}
+
+		private static NPOI.SS.UserModel.ICell SetCellValue(this NPOI.SS.UserModel.ICell cell, DateTime? nullableDate)
+			=> nullableDate.HasValue ? cell.SetCellValue(nullableDate.Value)
+			: cell.SetCellType(NPOI.SS.UserModel.CellType.Numeric);
+
+		private static NPOI.SS.UserModel.ICell SetCellValue(this NPOI.SS.UserModel.ICell cell, int? nullableInt)
+			=> nullableInt.HasValue ? cell.SetCellValue(nullableInt.Value)
+			: cell.SetCellType(NPOI.SS.UserModel.CellType.Numeric);
+
+		private static NPOI.SS.UserModel.ICell SetCellValue(this NPOI.SS.UserModel.ICell cell, float? nullableFloat)
+			=> nullableFloat.HasValue ? cell.SetCellValue(nullableFloat.Value)
+			: cell.SetCellType(NPOI.SS.UserModel.CellType.Numeric);
 	}
 }

Source/AudibleUtilities/AudibleUtilities.csproj

@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AudibleApi" Version="9.4.1.1" />
-    <PackageReference Include="Google.Protobuf" Version="3.30.2" />
+    <PackageReference Include="AudibleApi" Version="9.4.2.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.31.1" />
   </ItemGroup>
 
   <ItemGroup>

Source/DataLayer/AudioFormat.cs

@@ -0,0 +1,70 @@
+#nullable enable
+using Newtonsoft.Json;
+
+namespace DataLayer;
+
+public enum Codec : byte
+{
+	Unknown,
+	Mp3,
+	AAC_LC,
+	xHE_AAC,
+	EC_3,
+	AC_4
+}
+
+public class AudioFormat
+{
+	public static AudioFormat Default => new(Codec.Unknown, 0, 0, 0);
+	[JsonIgnore]
+	public bool IsDefault => Codec is Codec.Unknown && BitRate == 0 && SampleRate == 0 && ChannelCount == 0;
+	[JsonIgnore]
+	public Codec Codec { get; set; }
+	public int SampleRate { get; set; }
+	public int ChannelCount { get; set; }
+	public int BitRate { get; set; }
+
+	public AudioFormat(Codec codec, int bitRate, int sampleRate, int channelCount)
+	{
+		Codec = codec;
+		BitRate = bitRate;
+		SampleRate = sampleRate;
+		ChannelCount = channelCount;
+	}
+
+	public string CodecString => Codec switch
+	{
+		Codec.Mp3 => "mp3",
+		Codec.AAC_LC => "AAC-LC",
+		Codec.xHE_AAC => "xHE-AAC",
+		Codec.EC_3 => "EC-3",
+		Codec.AC_4 => "AC-4",
+		Codec.Unknown or _ => "[Unknown]",
+	};
+
+	//Property     | Start | Num  |   Max   | Current Max |
+	//             |  Bit  | Bits |  Value  | Value Used  |
+	//-----------------------------------------------------
+	//Codec	       |   35  |   4  |      15 |         5   |
+	//BitRate      |   23  |  12  |   4_095 |       768   |
+	//SampleRate   |    5  |  18  | 262_143 |    48_000   |
+	//ChannelCount |    0  |   5  |      31 |         6   |
+	public long Serialize() =>
+		((long)Codec << 35) |
+		((long)BitRate << 23) |
+		((long)SampleRate << 5) |
+		(long)ChannelCount;
+
+	public static AudioFormat Deserialize(long value)
+	{
+		var codec = (Codec)((value >> 35) & 15);
+		var bitRate = (int)((value >> 23) & 4_095);
+		var sampleRate = (int)((value >> 5) & 262_143);
+		var channelCount = (int)(value & 31);
+		return new AudioFormat(codec, bitRate, sampleRate, channelCount);
+	}
+
+	public override string ToString()
+		=> IsDefault ? "[Unknown Audio Format]"
+		: $"{CodecString} ({ChannelCount}ch | {SampleRate:N0}Hz | {BitRate}kbps)";
+}

Source/DataLayer/Configurations/BookConfig.cs

@@ -13,7 +13,6 @@ namespace DataLayer.Configurations
 
             entity.OwnsOne(b => b.Rating);
 
-            entity.Property(nameof(Book._audioFormat));
             //
             // CRUCIAL: ignore unmapped collections, even get-only
             //
@@ -50,6 +49,11 @@ namespace DataLayer.Configurations
                     b_udi
                         .Property(udi => udi.LastDownloadedVersion)
                         .HasConversion(ver => ver.ToString(), str => Version.Parse(str));
+                    b_udi
+                        .Property(udi => udi.LastDownloadedFormat)
+                        .HasConversion(af => af.Serialize(), str => AudioFormat.Deserialize(str));
+
+					b_udi.Property(udi => udi.LastDownloadedFileVersion);
 
                     // owns it 1:1, store in same table
                     b_udi.OwnsOne(udi => udi.Rating);

Source/DataLayer/DataLayer.csproj

@@ -12,12 +12,12 @@
   <ItemGroup>
     <PackageReference Include="Dinah.Core" Version="9.0.1.1" />
     <PackageReference Include="Dinah.EntityFrameworkCore" Version="9.0.0.1" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.4">
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.7">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.4" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.4">
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.7" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.7">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

Source/DataLayer/EfClasses/Book.cs

@@ -43,18 +43,13 @@ namespace DataLayer
         public ContentType ContentType { get; private set; }
         public string Locale { get; private set; }
 
-		//This field is now unused, however, there is little sense in adding a
-		//database migration to remove an unused field. Leave it for compatibility.
-#pragma warning disable CS0649 // Field 'Book._audioFormat' is never assigned to, and will always have its default value 0
-		internal long _audioFormat;
-#pragma warning restore CS0649
-
         // mutable
         public string PictureId { get; set; }
         public string PictureLarge { get; set; }
 
         // book details
         public bool IsAbridged { get; private set; }
+        public bool IsSpatial { get; private set; }
         public DateTime? DatePublished { get; private set; }
         public string Language { get; private set; }
 
@@ -242,10 +237,11 @@ namespace DataLayer
         public void UpdateProductRating(float overallRating, float performanceRating, float storyRating)
             => Rating.Update(overallRating, performanceRating, storyRating);
 
-        public void UpdateBookDetails(bool isAbridged, DateTime? datePublished, string language)
+        public void UpdateBookDetails(bool isAbridged, bool? isSpatial, DateTime? datePublished, string language)
         {
             // don't overwrite with default values
             IsAbridged |= isAbridged;
+            IsSpatial = isSpatial ?? IsSpatial;
             DatePublished = datePublished ?? DatePublished;
             Language = language?.FirstCharToUpper() ?? Language;
         }

Source/DataLayer/EfClasses/UserDefinedItem.cs

@@ -24,24 +24,52 @@ namespace DataLayer
     {
         internal int BookId { get; private set; }
         public Book Book { get; private set; }
-        public DateTime? LastDownloaded { get; private set; }
-        public Version LastDownloadedVersion { get; private set; }
+		/// <summary>
+		/// Date the audio file was last downloaded.
+		/// </summary>
+		public DateTime? LastDownloaded { get; private set; }
+		/// <summary>
+		/// Version of Libation used the last time the audio file was downloaded.
+		/// </summary>
+		public Version LastDownloadedVersion { get; private set; }
+		/// <summary>
+		/// Audio format of the last downloaded audio file.
+		/// </summary>
+		public AudioFormat LastDownloadedFormat { get; private set; }
+		/// <summary>
+		/// Version of the audio file that was last downloaded.
+		/// </summary>
+		public string LastDownloadedFileVersion { get; private set; }
 
-        public void SetLastDownloaded(Version version)
+        public void SetLastDownloaded(Version libationVersion, AudioFormat audioFormat, string audioVersion)
         {
-            if (LastDownloadedVersion != version)
+            if (LastDownloadedVersion != libationVersion)
             {
-                LastDownloadedVersion = version;
+                LastDownloadedVersion = libationVersion;
 				OnItemChanged(nameof(LastDownloadedVersion));
 			}
+            if (LastDownloadedFormat != audioFormat)
+            {
+                LastDownloadedFormat = audioFormat;
+				OnItemChanged(nameof(LastDownloadedFormat));
+			}
+            if (LastDownloadedFileVersion != audioVersion)
+            {
+				LastDownloadedFileVersion = audioVersion;
+				OnItemChanged(nameof(LastDownloadedFileVersion));
+			}
 
-            if (version is null)
+            if (libationVersion is null)
+            {
                 LastDownloaded = null;
+                LastDownloadedFormat = null;
+                LastDownloadedFileVersion = null;
+            }
             else
             {
-				LastDownloaded = DateTime.Now;
+                LastDownloaded = DateTime.Now;
                 OnItemChanged(nameof(LastDownloaded));
-			}
+            }
 		}
 
 		private UserDefinedItem() { }

Source/DataLayer/LibationContextFactory.cs

@@ -1,5 +1,6 @@
 using Dinah.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Diagnostics;
 
 namespace DataLayer
 {
@@ -7,6 +8,7 @@ namespace DataLayer
     {
         protected override LibationContext CreateNewInstance(DbContextOptions<LibationContext> options) => new LibationContext(options);
         protected override void UseDatabaseEngine(DbContextOptionsBuilder optionsBuilder, string connectionString)
-            => optionsBuilder.UseSqlite(connectionString, ob => ob.UseQuerySplittingBehavior(QuerySplittingBehavior.SplitQuery));
+            => optionsBuilder.ConfigureWarnings(w => w.Ignore(RelationalEventId.PendingModelChangesWarning))
+            .UseSqlite(connectionString, ob => ob.UseQuerySplittingBehavior(QuerySplittingBehavior.SplitQuery));
     }
 }

Source/DataLayer/Migrations/20250725074123_AddAudioFormatData.Designer.cs

@@ -0,0 +1,474 @@
+// <auto-generated />
+using System;
+using DataLayer;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace DataLayer.Migrations
+{
+    [DbContext(typeof(LibationContext))]
+    [Migration("20250725074123_AddAudioFormatData")]
+    partial class AddAudioFormatData
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.7");
+
+            modelBuilder.Entity("CategoryCategoryLadder", b =>
+                {
+                    b.Property<int>("_categoriesCategoryId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("_categoryLaddersCategoryLadderId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("_categoriesCategoryId", "_categoryLaddersCategoryLadderId");
+
+                    b.HasIndex("_categoryLaddersCategoryLadderId");
+
+                    b.ToTable("CategoryCategoryLadder");
+                });
+
+            modelBuilder.Entity("DataLayer.Book", b =>
+                {
+                    b.Property<int>("BookId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AudibleProductId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("ContentType")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime?>("DatePublished")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("IsAbridged")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("IsSpatial")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Language")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("LengthInMinutes")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Locale")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("PictureId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("PictureLarge")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Subtitle")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("BookId");
+
+                    b.HasIndex("AudibleProductId");
+
+                    b.ToTable("Books");
+                });
+
+            modelBuilder.Entity("DataLayer.BookCategory", b =>
+                {
+                    b.Property<int>("BookId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CategoryLadderId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("BookId", "CategoryLadderId");
+
+                    b.HasIndex("BookId");
+
+                    b.HasIndex("CategoryLadderId");
+
+                    b.ToTable("BookCategory");
+                });
+
+            modelBuilder.Entity("DataLayer.BookContributor", b =>
+                {
+                    b.Property<int>("BookId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ContributorId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<byte>("Order")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("BookId", "ContributorId", "Role");
+
+                    b.HasIndex("BookId");
+
+                    b.HasIndex("ContributorId");
+
+                    b.ToTable("BookContributor");
+                });
+
+            modelBuilder.Entity("DataLayer.Category", b =>
+                {
+                    b.Property<int>("CategoryId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AudibleCategoryId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("CategoryId");
+
+                    b.HasIndex("AudibleCategoryId");
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("DataLayer.CategoryLadder", b =>
+                {
+                    b.Property<int>("CategoryLadderId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("CategoryLadderId");
+
+                    b.ToTable("CategoryLadders");
+                });
+
+            modelBuilder.Entity("DataLayer.Contributor", b =>
+                {
+                    b.Property<int>("ContributorId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AudibleContributorId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("ContributorId");
+
+                    b.HasIndex("Name");
+
+                    b.ToTable("Contributors");
+
+                    b.HasData(
+                        new
+                        {
+                            ContributorId = -1,
+                            Name = ""
+                        });
+                });
+
+            modelBuilder.Entity("DataLayer.LibraryBook", b =>
+                {
+                    b.Property<int>("BookId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("AbsentFromLastScan")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Account")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("DateAdded")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("BookId");
+
+                    b.ToTable("LibraryBooks");
+                });
+
+            modelBuilder.Entity("DataLayer.Series", b =>
+                {
+                    b.Property<int>("SeriesId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AudibleSeriesId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("SeriesId");
+
+                    b.HasIndex("AudibleSeriesId");
+
+                    b.ToTable("Series");
+                });
+
+            modelBuilder.Entity("DataLayer.SeriesBook", b =>
+                {
+                    b.Property<int>("SeriesId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("BookId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Order")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("SeriesId", "BookId");
+
+                    b.HasIndex("BookId");
+
+                    b.HasIndex("SeriesId");
+
+                    b.ToTable("SeriesBook");
+                });
+
+            modelBuilder.Entity("CategoryCategoryLadder", b =>
+                {
+                    b.HasOne("DataLayer.Category", null)
+                        .WithMany()
+                        .HasForeignKey("_categoriesCategoryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DataLayer.CategoryLadder", null)
+                        .WithMany()
+                        .HasForeignKey("_categoryLaddersCategoryLadderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("DataLayer.Book", b =>
+                {
+                    b.OwnsOne("DataLayer.Rating", "Rating", b1 =>
+                        {
+                            b1.Property<int>("BookId")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<float>("OverallRating")
+                                .HasColumnType("REAL");
+
+                            b1.Property<float>("PerformanceRating")
+                                .HasColumnType("REAL");
+
+                            b1.Property<float>("StoryRating")
+                                .HasColumnType("REAL");
+
+                            b1.HasKey("BookId");
+
+                            b1.ToTable("Books");
+
+                            b1.WithOwner()
+                                .HasForeignKey("BookId");
+                        });
+
+                    b.OwnsMany("DataLayer.Supplement", "Supplements", b1 =>
+                        {
+                            b1.Property<int>("SupplementId")
+                                .ValueGeneratedOnAdd()
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<int>("BookId")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<string>("Url")
+                                .HasColumnType("TEXT");
+
+                            b1.HasKey("SupplementId");
+
+                            b1.HasIndex("BookId");
+
+                            b1.ToTable("Supplement");
+
+                            b1.WithOwner("Book")
+                                .HasForeignKey("BookId");
+
+                            b1.Navigation("Book");
+                        });
+
+                    b.OwnsOne("DataLayer.UserDefinedItem", "UserDefinedItem", b1 =>
+                        {
+                            b1.Property<int>("BookId")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<int>("BookStatus")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<bool>("IsFinished")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<DateTime?>("LastDownloaded")
+                                .HasColumnType("TEXT");
+
+                            b1.Property<string>("LastDownloadedFileVersion")
+                                .HasColumnType("TEXT");
+
+                            b1.Property<long?>("LastDownloadedFormat")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<string>("LastDownloadedVersion")
+                                .HasColumnType("TEXT");
+
+                            b1.Property<int?>("PdfStatus")
+                                .HasColumnType("INTEGER");
+
+                            b1.Property<string>("Tags")
+                                .HasColumnType("TEXT");
+
+                            b1.HasKey("BookId");
+
+                            b1.ToTable("UserDefinedItem", (string)null);
+
+                            b1.WithOwner("Book")
+                                .HasForeignKey("BookId");
+
+                            b1.OwnsOne("DataLayer.Rating", "Rating", b2 =>
+                                {
+                                    b2.Property<int>("UserDefinedItemBookId")
+                                        .HasColumnType("INTEGER");
+
+                                    b2.Property<float>("OverallRating")
+                                        .HasColumnType("REAL");
+
+                                    b2.Property<float>("PerformanceRating")
+                                        .HasColumnType("REAL");
+
+                                    b2.Property<float>("StoryRating")
+                                        .HasColumnType("REAL");
+
+                                    b2.HasKey("UserDefinedItemBookId");
+
+                                    b2.ToTable("UserDefinedItem");
+
+                                    b2.WithOwner()
+                                        .HasForeignKey("UserDefinedItemBookId");
+                                });
+
+                            b1.Navigation("Book");
+
+                            b1.Navigation("Rating");
+                        });
+
+                    b.Navigation("Rating");
+
+                    b.Navigation("Supplements");
+
+                    b.Navigation("UserDefinedItem");
+                });
+
+            modelBuilder.Entity("DataLayer.BookCategory", b =>
+                {
+                    b.HasOne("DataLayer.Book", "Book")
+                        .WithMany("CategoriesLink")
+                        .HasForeignKey("BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DataLayer.CategoryLadder", "CategoryLadder")
+                        .WithMany("BooksLink")
+                        .HasForeignKey("CategoryLadderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+
+                    b.Navigation("CategoryLadder");
+                });
+
+            modelBuilder.Entity("DataLayer.BookContributor", b =>
+                {
+                    b.HasOne("DataLayer.Book", "Book")
+                        .WithMany("ContributorsLink")
+                        .HasForeignKey("BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DataLayer.Contributor", "Contributor")
+                        .WithMany("BooksLink")
+                        .HasForeignKey("ContributorId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+
+                    b.Navigation("Contributor");
+                });
+
+            modelBuilder.Entity("DataLayer.LibraryBook", b =>
+                {
+                    b.HasOne("DataLayer.Book", "Book")
+                        .WithOne()
+                        .HasForeignKey("DataLayer.LibraryBook", "BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+                });
+
+            modelBuilder.Entity("DataLayer.SeriesBook", b =>
+                {
+                    b.HasOne("DataLayer.Book", "Book")
+                        .WithMany("SeriesLink")
+                        .HasForeignKey("BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DataLayer.Series", "Series")
+                        .WithMany("BooksLink")
+                        .HasForeignKey("SeriesId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+
+                    b.Navigation("Series");
+                });
+
+            modelBuilder.Entity("DataLayer.Book", b =>
+                {
+                    b.Navigation("CategoriesLink");
+
+                    b.Navigation("ContributorsLink");
+
+                    b.Navigation("SeriesLink");
+                });
+
+            modelBuilder.Entity("DataLayer.CategoryLadder", b =>
+                {
+                    b.Navigation("BooksLink");
+                });
+
+            modelBuilder.Entity("DataLayer.Contributor", b =>
+                {
+                    b.Navigation("BooksLink");
+                });
+
+            modelBuilder.Entity("DataLayer.Series", b =>
+                {
+                    b.Navigation("BooksLink");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Source/DataLayer/Migrations/20250725074123_AddAudioFormatData.cs

@@ -0,0 +1,48 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DataLayer.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddAudioFormatData : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.RenameColumn(
+                name: "_audioFormat",
+                table: "Books",
+                newName: "IsSpatial");
+
+            migrationBuilder.AddColumn<string>(
+                name: "LastDownloadedFileVersion",
+                table: "UserDefinedItem",
+                type: "TEXT",
+                nullable: true);
+
+            migrationBuilder.AddColumn<long>(
+                name: "LastDownloadedFormat",
+                table: "UserDefinedItem",
+                type: "INTEGER",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "LastDownloadedFileVersion",
+                table: "UserDefinedItem");
+
+            migrationBuilder.DropColumn(
+                name: "LastDownloadedFormat",
+                table: "UserDefinedItem");
+
+            migrationBuilder.RenameColumn(
+                name: "IsSpatial",
+                table: "Books",
+                newName: "_audioFormat");
+        }
+    }
+}

Source/DataLayer/Migrations/LibationContextModelSnapshot.cs

@@ -15,7 +15,7 @@ namespace DataLayer.Migrations
         protected override void BuildModel(ModelBuilder modelBuilder)
         {
 #pragma warning disable 612, 618
-            modelBuilder.HasAnnotation("ProductVersion", "8.0.5");
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.7");
 
             modelBuilder.Entity("CategoryCategoryLadder", b =>
                 {
@@ -53,6 +53,9 @@ namespace DataLayer.Migrations
                     b.Property<bool>("IsAbridged")
                         .HasColumnType("INTEGER");
 
+                    b.Property<bool>("IsSpatial")
+                        .HasColumnType("INTEGER");
+
                     b.Property<string>("Language")
                         .HasColumnType("TEXT");
 
@@ -74,9 +77,6 @@ namespace DataLayer.Migrations
                     b.Property<string>("Title")
                         .HasColumnType("TEXT");
 
-                    b.Property<long>("_audioFormat")
-                        .HasColumnType("INTEGER");
-
                     b.HasKey("BookId");
 
                     b.HasIndex("AudibleProductId");
@@ -318,6 +318,12 @@ namespace DataLayer.Migrations
                             b1.Property<DateTime?>("LastDownloaded")
                                 .HasColumnType("TEXT");
 
+                            b1.Property<string>("LastDownloadedFileVersion")
+                                .HasColumnType("TEXT");
+
+                            b1.Property<long?>("LastDownloadedFormat")
+                                .HasColumnType("INTEGER");
+
                             b1.Property<string>("LastDownloadedVersion")
                                 .HasColumnType("TEXT");
 

Source/DataLayer/QueryObjects/LibraryBookQueries.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using Microsoft.EntityFrameworkCore;
 
+#nullable enable
 namespace DataLayer
 {
     // only library importing should use tracking. All else should be NoTracking.
@@ -24,13 +25,13 @@ namespace DataLayer
 				.Where(c => !c.Book.IsEpisodeParent() || includeParents)
 				.ToList();
 
-        public static LibraryBook GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
+        public static LibraryBook? GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
             => context
                 .LibraryBooks
                 .AsNoTrackingWithIdentityResolution()
                 .GetLibraryBook(productId);
 
-        public static LibraryBook GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
+        public static LibraryBook? GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
             => library
                 .GetLibrary()
                 .SingleOrDefault(lb => lb.Book.AudibleProductId == productId);
@@ -103,13 +104,11 @@ namespace DataLayer
                         ) == true
                     ).ToList();
 
-        public static IEnumerable<LibraryBook> UnLiberated(this IEnumerable<LibraryBook> bookList)
-            => bookList
-                .Where(
-                    lb =>
-                        !lb.AbsentFromLastScan &&
-                        (lb.Book.UserDefinedItem.BookStatus is LiberatedStatus.NotLiberated or LiberatedStatus.PartialDownload
-                        || lb.Book.UserDefinedItem.PdfStatus is LiberatedStatus.NotLiberated or LiberatedStatus.PartialDownload)
-                    );
+		public static bool NeedsPdfDownload(this LibraryBook libraryBook)
+			=> !libraryBook.AbsentFromLastScan && libraryBook.Book.UserDefinedItem.PdfStatus is LiberatedStatus.NotLiberated;
+		public static bool NeedsBookDownload(this LibraryBook libraryBook)
+			=> !libraryBook.AbsentFromLastScan && libraryBook.Book.UserDefinedItem.BookStatus is LiberatedStatus.NotLiberated or LiberatedStatus.PartialDownload;
+		public static IEnumerable<LibraryBook> UnLiberated(this IEnumerable<LibraryBook> bookList)
+            => bookList.Where(lb => lb.NeedsPdfDownload() || lb.NeedsBookDownload());
     }
 }

Source/DtoImporterService/BookImporter.cs

@@ -137,8 +137,6 @@ namespace DtoImporterService
 				book.ReplacePublisher(publisher);
 			}
 
-            book.UpdateBookDetails(item.IsAbridged, item.DatePublished, item.Language);
-
             if (item.PdfUrl is not null)
 				book.AddSupplementDownloadUrl(item.PdfUrl.ToString());
 
@@ -166,8 +164,9 @@ namespace DtoImporterService
 
             // 2023-02-01
             // updateBook must update language on books which were imported before the migration which added language.
-            // Can eventually delete this
-            book.UpdateBookDetails(item.IsAbridged, item.DatePublished, item.Language);
+            // 2025-07-30
+            // updateBook must update isSpatial on books which were imported before the migration which added isSpatial.
+            book.UpdateBookDetails(item.IsAbridged, item.AssetDetails?.Any(a => a.IsSpatial), item.DatePublished, item.Language);
 
             book.UpdateProductRating(
 				(float)(item.Rating?.OverallDistribution?.AverageRating ?? 0),

Source/FileLiberator/AudioFileStorageExt.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using AaxDecrypter;
 using DataLayer;
 using LibationFileManager;
 using LibationFileManager.Templates;
@@ -34,30 +35,17 @@ namespace FileLiberator
 			return Templates.Folder.GetFilename(libraryBook.ToDto(), AudibleFileStorage.BooksDirectory, "");
 		}
 
-		/// <summary>
-		/// DownloadDecryptBook:
-		/// Path: in progress directory.
-		/// File name: final file name.
-		/// </summary>
-		public static string GetInProgressFilename(this AudioFileStorage _, LibraryBookDto libraryBook, string extension)
-			=> Templates.File.GetFilename(libraryBook, AudibleFileStorage.DecryptInProgressDirectory, extension, returnFirstExisting: true);
-
 		/// <summary>
 		/// PDF: audio file does not exist
 		/// </summary>
-		public static string GetBooksDirectoryFilename(this AudioFileStorage _, LibraryBook libraryBook, string extension)
-			=> Templates.File.GetFilename(libraryBook.ToDto(), AudibleFileStorage.BooksDirectory, extension);
-		
-		/// <summary>
-		/// PDF: audio file does not exist
-		/// </summary>
-		public static string GetBooksDirectoryFilename(this AudioFileStorage _, LibraryBookDto dto, string extension)
-			=> Templates.File.GetFilename(dto, AudibleFileStorage.BooksDirectory, extension);
+		public static string GetBooksDirectoryFilename(this AudioFileStorage _, LibraryBook libraryBook, string extension, bool returnFirstExisting = false)
+			=> Templates.File.GetFilename(libraryBook.ToDto(), AudibleFileStorage.BooksDirectory, extension, returnFirstExisting: returnFirstExisting);
 
 		/// <summary>
 		/// PDF: audio file already exists
 		/// </summary>
-		public static string GetCustomDirFilename(this AudioFileStorage _, LibraryBook libraryBook, string dirFullPath, string extension)
-			=> Templates.File.GetFilename(libraryBook.ToDto(), dirFullPath, extension);
+		public static string GetCustomDirFilename(this AudioFileStorage _, LibraryBook libraryBook, string dirFullPath, string extension, MultiConvertFileProperties partProperties = null, bool returnFirstExisting = false)
+			=> partProperties is null ? Templates.File.GetFilename(libraryBook.ToDto(), dirFullPath, extension, returnFirstExisting: returnFirstExisting)
+			: Templates.ChapterFile.GetFilename(libraryBook.ToDto(), partProperties, dirFullPath, extension, returnFirstExisting: returnFirstExisting);
 	}
 }

Source/FileLiberator/AudioFormatDecoder.cs

@@ -0,0 +1,242 @@
+using AAXClean;
+using DataLayer;
+using FileManager;
+using Mpeg4Lib.Boxes;
+using Mpeg4Lib.Util;
+using NAudio.Lame.ID3;
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+#nullable enable
+namespace AaxDecrypter;
+
+/// <summary> Read audio codec, bitrate, sample rate, and channel count from MP4 and MP3 audio files. </summary>
+internal static class AudioFormatDecoder
+{
+	public static AudioFormat FromMpeg4(string filename)
+	{
+		using var fileStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
+		return FromMpeg4(new Mp4File(fileStream));
+	}
+
+	public static AudioFormat FromMpeg4(Mp4File mp4File)
+	{
+		Codec codec;
+		if (mp4File.AudioSampleEntry.Dac4 is not null)
+		{
+			codec = Codec.AC_4;
+		}
+		else if (mp4File.AudioSampleEntry.Dec3 is not null)
+		{
+			codec = Codec.EC_3;
+		}
+		else if (mp4File.AudioSampleEntry.Esds is EsdsBox esds)
+		{
+			var objectType = esds.ES_Descriptor.DecoderConfig.AudioSpecificConfig.AudioObjectType;
+			codec
+				= objectType == 2 ? Codec.AAC_LC
+				: objectType == 42 ? Codec.xHE_AAC
+				: Codec.Unknown;
+		}
+		else
+			return AudioFormat.Default;
+
+		var bitrate = (int)Math.Round(mp4File.AverageBitrate / 1024d);
+
+		return new AudioFormat(codec, bitrate, mp4File.TimeScale, mp4File.AudioChannels);
+	}
+
+	public static AudioFormat FromMpeg3(LongPath mp3Filename)
+	{
+		using var mp3File = File.Open(mp3Filename, FileMode.Open, FileAccess.Read, FileShare.Read);
+		if (Id3Header.Create(mp3File) is Id3Header id3header)
+			id3header.SeekForwardToPosition(mp3File, mp3File.Position + id3header.Size);
+		else
+		{
+			Serilog.Log.Logger.Debug("File appears not to have ID3 tags.");
+			mp3File.Position = 0;
+		}
+
+		if (!SeekToFirstKeyFrame(mp3File))
+		{
+			Serilog.Log.Logger.Warning("Invalid frame sync read from file at end of ID3 tag.");
+			return AudioFormat.Default;
+		}
+
+		var mpegSize = mp3File.Length - mp3File.Position;
+		if (mpegSize < 64)
+		{
+			Serilog.Log.Logger.Warning("Remaining file length is too short to contain any mp3 frames. {@File}", mp3Filename);
+			return AudioFormat.Default;
+		}
+
+		#region read first mp3 frame header
+		//https://www.codeproject.com/Articles/8295/MPEG-Audio-Frame-Header#VBRIHeader
+		var reader = new BitReader(mp3File.ReadBlock(4));
+		reader.Position = 11; //Skip frame header magic bits
+		var versionId = (Version)reader.Read(2);
+		var layerDesc = (Layer)reader.Read(2);
+
+		if (layerDesc is not Layer.Layer_3)
+		{
+			Serilog.Log.Logger.Warning("Could not read mp3 data from {@layerVersion} file.", layerDesc.ToString());
+			return AudioFormat.Default;
+		}
+
+		if (versionId is Version.Reserved)
+		{
+			Serilog.Log.Logger.Warning("Mp3 data data cannot be read from a file with version = 'Reserved'");
+			return AudioFormat.Default;
+		}
+
+		var protectionBit = reader.ReadBool();
+		var bitrateIndex = reader.Read(4);
+		var freqIndex = reader.Read(2);
+		_ = reader.ReadBool();                  //Padding bit
+		_ = reader.ReadBool();                  //Private bit
+		var channelMode = reader.Read(2);
+		_ = reader.Read(2);                     //Mode extension
+		_ = reader.ReadBool();                  //Copyright
+		_ = reader.ReadBool();                  //Original
+		_ = reader.Read(2);                     //Emphasis
+		#endregion
+
+		//Read the sample rate,and channels from the first frame's header.
+		var sampleRate = Mp3SampleRateIndex[versionId][freqIndex];
+		var channelCount = channelMode == 3 ? 1 : 2;
+
+		//Try to read variable bitrate info from the first frame.
+		//Revert to fixed bitrate from frame header if not found.
+		var bitrate
+			= TryReadXingBitrate(out var br) ? br
+			: TryReadVbriBitrate(out br) ? br
+			: Mp3BitrateIndex[versionId][bitrateIndex];
+
+		return new AudioFormat(Codec.Mp3, bitrate, sampleRate, channelCount);
+
+		#region Variable bitrate header readers
+		bool TryReadXingBitrate(out int bitrate)
+		{
+			const int XingHeader = 0x58696e67;
+			const int InfoHeader = 0x496e666f;
+
+			var sideInfoSize = GetSideInfo(channelCount == 2, versionId) + (protectionBit ? 0 : 2);
+			mp3File.Position += sideInfoSize;
+
+			if (mp3File.ReadUInt32BE() is XingHeader or InfoHeader)
+			{
+				//Xing or Info header (common)
+				var flags = mp3File.ReadUInt32BE();
+				bool hasFramesField = (flags & 1) == 1;
+				bool hasBytesField = (flags & 2) == 2;
+
+				if (hasFramesField)
+				{
+					var numFrames = mp3File.ReadUInt32BE();
+					if (hasBytesField)
+					{
+						mpegSize = mp3File.ReadUInt32BE();
+					}
+
+					var samplesPerFrame = GetSamplesPerFrame(sampleRate);
+					var duration = samplesPerFrame * numFrames / sampleRate;
+					bitrate = (short)(mpegSize / duration / 1024 * 8);
+					return true;
+				}
+			}
+			else
+				mp3File.Position -= sideInfoSize + 4;
+
+			bitrate = 0;
+			return false;
+		}
+
+		bool TryReadVbriBitrate(out int bitrate)
+		{
+			const int VBRIHeader = 0x56425249;
+
+			mp3File.Position += 32;
+
+			if (mp3File.ReadUInt32BE() is VBRIHeader)
+			{
+				//VBRI header (rare)
+				_ = mp3File.ReadBlock(6);
+				mpegSize = mp3File.ReadUInt32BE();
+				var numFrames = mp3File.ReadUInt32BE();
+
+				var samplesPerFrame = GetSamplesPerFrame(sampleRate);
+				var duration = samplesPerFrame * numFrames / sampleRate;
+				bitrate = (short)(mpegSize / duration / 1024 * 8);
+				return true;
+			}
+			bitrate = 0;
+			return false;
+		}
+		#endregion
+	}
+
+	#region MP3 frame decoding helpers
+	private static bool SeekToFirstKeyFrame(Stream file)
+	{
+		//Frame headers begin with first 11 bits set.
+		const int MaxSeekBytes = 4096;
+		var maxPosition = Math.Min(file.Length, file.Position + MaxSeekBytes) - 2;
+
+		while (file.Position < maxPosition)
+		{
+			if (file.ReadByte() == 0xff)
+			{
+				if ((file.ReadByte() & 0xe0) == 0xe0)
+				{
+					file.Position -= 2;
+					return true;
+				}
+				file.Position--;
+			}
+		}
+		return false;
+	}
+
+	private enum Version
+	{
+		Version_2_5,
+		Reserved,
+		Version_2,
+		Version_1
+	}
+
+	private enum Layer
+	{
+		Reserved,
+		Layer_3,
+		Layer_2,
+		Layer_1
+	}
+
+	private static double GetSamplesPerFrame(int sampleRate) => sampleRate >= 32000 ? 1152 : 576;
+
+	private static byte GetSideInfo(bool stereo, Version version) => (stereo, version) switch
+	{
+		(true,  Version.Version_1)                        => 32,
+		(true,  Version.Version_2 or Version.Version_2_5) => 17,
+		(false, Version.Version_1)                        => 17,
+		(false, Version.Version_2 or Version.Version_2_5) =>  9,
+		_ => 0,
+	};
+
+	private static readonly Dictionary<Version, ushort[]> Mp3SampleRateIndex = new()
+	{
+		{ Version.Version_2_5, [11025, 12000,  8000] },
+		{ Version.Version_2,   [22050, 24000, 16000] },
+		{ Version.Version_1,   [44100, 48000, 32000] },
+	};
+
+	private static readonly Dictionary<Version, short[]> Mp3BitrateIndex = new()
+	{
+		{ Version.Version_2_5, [-1, 8,16,24,32,40,48,56, 64, 80, 96,112,128,144,160,-1]},
+		{ Version.Version_2,   [-1, 8,16,24,32,40,48,56, 64, 80, 96,112,128,144,160,-1]},
+		{ Version.Version_1,   [-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1]}
+	};
+	#endregion
+}

Source/FileLiberator/ConvertToMp3.cs

@@ -1,6 +1,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using AAXClean;
 using AAXClean.Codecs;
@@ -19,7 +20,13 @@ namespace FileLiberator
 		private readonly AaxDecrypter.AverageSpeed averageSpeed = new();
 		private static string Mp3FileName(string m4bPath) => Path.ChangeExtension(m4bPath ?? "", ".mp3");
 
-		public override Task CancelAsync() => Mp4Operation?.CancelAsync() ?? Task.CompletedTask;		
+		private CancellationTokenSource CancellationTokenSource { get; set; }
+		public override async Task CancelAsync()
+		{
+			await CancellationTokenSource.CancelAsync();
+			if (Mp4Operation is not null)
+				await Mp4Operation.CancelAsync();
+		}
 
 		public static bool ValidateMp3(LibraryBook libraryBook)
 		{
@@ -32,17 +39,29 @@ namespace FileLiberator
 		public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
 		{
 			OnBegin(libraryBook);
+			var cancellationToken = (CancellationTokenSource = new()).Token;
 
 			try
 			{
-				var m4bPaths = AudibleFileStorage.Audio.GetPaths(libraryBook.Book.AudibleProductId);
+				var m4bPaths = AudibleFileStorage.Audio.GetPaths(libraryBook.Book.AudibleProductId)
+					.Where(m4bPath => File.Exists(m4bPath))
+					.Select(m4bPath => new { m4bPath, proposedMp3Path = Mp3FileName(m4bPath), m4bSize = new FileInfo(m4bPath).Length })
+					.Where(p => !File.Exists(p.proposedMp3Path))
+					.ToArray();
 
-				foreach (var m4bPath in m4bPaths)
+				long totalInputSize = m4bPaths.Sum(p => p.m4bSize);
+				long sizeOfCompletedFiles = 0L;
+				foreach (var entry in m4bPaths)
 				{
-					var proposedMp3Path = Mp3FileName(m4bPath);
-					if (File.Exists(proposedMp3Path) || !File.Exists(m4bPath)) continue;
+					cancellationToken.ThrowIfCancellationRequested();
+					if (File.Exists(entry.proposedMp3Path) || !File.Exists(entry.m4bPath))
+					{
+						sizeOfCompletedFiles += entry.m4bSize;
+						continue;
+					}
 
-					var m4bBook = await Task.Run(() => new Mp4File(m4bPath, FileAccess.Read));
+					using var m4bFileStream = File.Open(entry.m4bPath, FileMode.Open, FileAccess.Read, FileShare.Read);
+					var m4bBook = new Mp4File(m4bFileStream);
 
 					//AAXClean.Codecs only supports decoding AAC and E-AC-3 audio.
 					if (m4bBook.AudioSampleEntry.Esds is null && m4bBook.AudioSampleEntry.Dec3 is null)
@@ -69,74 +88,85 @@ namespace FileLiberator
 						lameConfig.ID3.Track = trackCount > 0 ? $"{trackNum}/{trackCount}" : trackNum.ToString();
 					}
 
-					using var mp3File = File.Open(Path.GetTempFileName(), FileMode.OpenOrCreate, FileAccess.ReadWrite);
+					long currentFileNumBytesProcessed = 0;
 					try
 					{
-						Mp4Operation = m4bBook.ConvertToMp3Async(mp3File, lameConfig, chapters);
-						Mp4Operation.ConversionProgressUpdate += M4bBook_ConversionProgressUpdate;
-						await Mp4Operation;
-
-						if (Mp4Operation.IsCanceled)
+						var tempPath = Path.GetTempFileName();
+						using (var mp3File = File.Open(tempPath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
 						{
-							FileUtility.SaferDelete(mp3File.Name);
-							return new StatusHandler { "Cancelled" };
+							Mp4Operation = m4bBook.ConvertToMp3Async(mp3File, lameConfig, chapters);
+							Mp4Operation.ConversionProgressUpdate += m4bBook_ConversionProgressUpdate;
+							await Mp4Operation;
 						}
-						else
-						{
-							var realMp3Path
+
+						if (cancellationToken.IsCancellationRequested)
+							FileUtility.SaferDelete(tempPath);
+
+						cancellationToken.ThrowIfCancellationRequested();
+
+						var realMp3Path
 								= FileUtility.SaferMoveToValidPath(
-									mp3File.Name,
-									proposedMp3Path,
+									tempPath,
+									entry.proposedMp3Path,
 									Configuration.Instance.ReplacementCharacters,
 									extension: "mp3",
 									Configuration.Instance.OverwriteExisting);
 
-							SetFileTime(libraryBook, realMp3Path);
-							SetDirectoryTime(libraryBook, Path.GetDirectoryName(realMp3Path));
-
-							OnFileCreated(libraryBook, realMp3Path);
-						}
-					}
-					catch (Exception ex)
-					{
-						Serilog.Log.Error(ex, "AAXClean error");
-						return new StatusHandler { "Conversion failed" };
+						SetFileTime(libraryBook, realMp3Path);
+						SetDirectoryTime(libraryBook, Path.GetDirectoryName(realMp3Path));
+						OnFileCreated(libraryBook, realMp3Path);
 					}
 					finally
 					{
 						if (Mp4Operation is not null)
-							Mp4Operation.ConversionProgressUpdate -= M4bBook_ConversionProgressUpdate;
+							Mp4Operation.ConversionProgressUpdate -= m4bBook_ConversionProgressUpdate;
 
-						m4bBook.InputStream.Close();
-						mp3File.Close();
+						sizeOfCompletedFiles += entry.m4bSize;
+					}
+					void m4bBook_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
+					{
+						currentFileNumBytesProcessed = (long)(e.FractionCompleted * entry.m4bSize);
+						var bytesCompleted = sizeOfCompletedFiles + currentFileNumBytesProcessed;
+						ConversionProgressUpdate(totalInputSize, bytesCompleted);
 					}
 				}
+				return new StatusHandler();
+			}
+			catch (Exception ex)
+			{
+				if (!cancellationToken.IsCancellationRequested)
+				{
+					Serilog.Log.Error(ex, "AAXClean error");
+					return new StatusHandler { "Conversion failed" };
+				}
+				return new StatusHandler { "Cancelled" };
 			}
 			finally
 			{
 				OnCompleted(libraryBook);
+				CancellationTokenSource.Dispose();
+				CancellationTokenSource = null;
 			}
-			return new StatusHandler();
 		}
 
-		private void M4bBook_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
+		private void ConversionProgressUpdate(long totalInputSize, long bytesCompleted)
 		{
-			averageSpeed.AddPosition(e.ProcessPosition.TotalSeconds);
+			averageSpeed.AddPosition(bytesCompleted);
 
-			var remainingTimeToProcess = (e.EndTime - e.ProcessPosition).TotalSeconds;
-			var estTimeRemaining = remainingTimeToProcess / averageSpeed.Average;
+			var remainingBytes = (totalInputSize - bytesCompleted);
+			var estTimeRemaining = remainingBytes / averageSpeed.Average;
 
 			if (double.IsNormal(estTimeRemaining))
 				OnStreamingTimeRemaining(TimeSpan.FromSeconds(estTimeRemaining));
 
-			double progressPercent = 100 * e.FractionCompleted;
+			double progressPercent = 100 * bytesCompleted / totalInputSize;
 
 			OnStreamingProgressChanged(
 				new DownloadProgress
 				{
 					ProgressPercentage = progressPercent,
-					BytesReceived = (long)(e.ProcessPosition - e.StartTime).TotalSeconds,
-					TotalBytesToReceive = (long)(e.EndTime - e.StartTime).TotalSeconds
+					BytesReceived = bytesCompleted,
+					TotalBytesToReceive = totalInputSize
 				});
 		}
 	}

Source/FileLiberator/DownloadDecryptBook.cs

@@ -1,174 +1,196 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using AaxDecrypter;
+using AaxDecrypter;
 using ApplicationServices;
 using AudibleApi.Common;
 using DataLayer;
 using Dinah.Core;
 using Dinah.Core.ErrorHandling;
+using Dinah.Core.Net.Http;
 using FileManager;
 using LibationFileManager;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 
+#nullable enable
 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 CancellationTokenSource? cancellationTokenSource;
+		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 async Task CancelAsync()
+		{
+			if (abDownloader is not null) await abDownloader.CancelAsync();
+			if (cancellationTokenSource is not null) await cancellationTokenSource.CancelAsync();
+		}
 
-        public override Task CancelAsync() => abDownloader?.CancelAsync() ?? Task.CompletedTask;
+		public override async Task<StatusHandler> ProcessAsync(LibraryBook libraryBook)
+		{
+			OnBegin(libraryBook);
+			cancellationTokenSource = new CancellationTokenSource();
+			var cancellationToken = cancellationTokenSource.Token;
 
-        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);
-            }
+			try
+			{
+				if (libraryBook.Book.Audio_Exists())
+					return new StatusHandler { "Cannot find decrypt. Final audio file already exists" };
 
-            OnBegin(libraryBook);
+				DownloadValidation(libraryBook);
 
-            try
-            {
-                if (libraryBook.Book.Audio_Exists())
-                    return new StatusHandler { "Cannot find decrypt. Final audio file already exists" };
-
-                downloadValidation(libraryBook);
 				var api = await libraryBook.GetApiAsync();
-                var config = Configuration.Instance;
-				using var downloadOptions = await DownloadOptions.InitiateDownloadAsync(api, config, libraryBook);
+				using var downloadOptions = await DownloadOptions.InitiateDownloadAsync(api, Configuration.Instance, libraryBook, cancellationToken);
+				var result = await DownloadAudiobookAsync(api, downloadOptions, cancellationToken);
 
-                bool success = false;
-                try
-                {
-                    FilePathCache.Inserted += FilePathCache_Inserted;
-                    FilePathCache.Removed += FilePathCache_Removed;
+				if (!result.Success || getFirstAudioFile(result.ResultFiles) is not TempFile audioFile)
+				{
+					// decrypt failed. Delete all output entries but leave the cache files.
+					result.ResultFiles.ForEach(f => FileUtility.SaferDelete(f.FilePath));
+					cancellationToken.ThrowIfCancellationRequested();
+					return new StatusHandler { "Decrypt failed" };
+				}
 
-                    success = await downloadAudiobookAsync(api, config, downloadOptions);
-                }
-                finally
-                {
-                    FilePathCache.Inserted -= FilePathCache_Inserted;
-                    FilePathCache.Removed -= FilePathCache_Removed;
-                }
+				if (Configuration.Instance.RetainAaxFile)
+				{
+					//Add the cached aaxc and key files to the entries list to be moved to the Books directory.
+					result.ResultFiles.AddRange(getAaxcFiles(result.CacheFiles));
+				}
 
-                // decrypt failed
-                if (!success || getFirstAudioFile(entries) == default)
-                {
-                    await Task.WhenAll(
-                        entries
-                        .Where(f => f.FileType != FileType.AAXC)
-                        .Select(f => Task.Run(() => FileUtility.SaferDelete(f.Path))));
+				//Set the last downloaded information on the book so that it can be used in the naming templates,
+				//but don't persist it until everything completes successfully (in the finally block)
+				var audioFormat = GetFileFormatInfo(downloadOptions, audioFile);
+				var audioVersion = downloadOptions.ContentMetadata.ContentReference.Version;
+				libraryBook.Book.UserDefinedItem.SetLastDownloaded(Configuration.LibationVersion, audioFormat, audioVersion);
 
-                    return
-                        abDownloader?.IsCanceled is true
-                        ? new StatusHandler { "Cancelled" }
-                        : new StatusHandler { "Decrypt failed" };
-                }
+				var finalStorageDir = getDestinationDirectory(libraryBook);
 
-                var finalStorageDir = getDestinationDirectory(libraryBook);
-
-                var moveFilesTask = Task.Run(() => moveFilesToBooksDir(libraryBook, entries));
-                Task[] finalTasks =
-                [
-                    Task.Run(() => downloadCoverArt(downloadOptions)),
-                    moveFilesTask,
-                    Task.Run(() => WindowsDirectory.SetCoverAsFolderIcon(libraryBook.Book.PictureId, finalStorageDir))
-                ];
+				//post-download tasks done in parallel.
+				var moveFilesTask = Task.Run(() => MoveFilesToBooksDir(libraryBook, finalStorageDir, result.ResultFiles, cancellationToken));
+				Task[] finalTasks =
+				[
+					moveFilesTask,
+					Task.Run(() => DownloadCoverArt(finalStorageDir, downloadOptions, cancellationToken)),
+					Task.Run(() => DownloadRecordsAsync(api, finalStorageDir, downloadOptions, cancellationToken)),
+					Task.Run(() => DownloadMetadataAsync(api, finalStorageDir, downloadOptions, cancellationToken)),
+					Task.Run(() => WindowsDirectory.SetCoverAsFolderIcon(libraryBook.Book.PictureId, finalStorageDir, cancellationToken))
+				];
 
 				try
-                {
-                    await Task.WhenAll(finalTasks);
-                }
-                catch
-                {
-					//Swallow downloadCoverArt and SetCoverAsFolderIcon exceptions.
-                    //Only fail if the downloaded audio files failed to move to Books directory
-					if (moveFilesTask.IsFaulted)
-                    {
-                        throw;
-                    }
-                }
-                finally
-                {
-                    if (moveFilesTask.IsCompletedSuccessfully)
-                    {
-                        await Task.Run(() => libraryBook.UpdateBookStatus(LiberatedStatus.Liberated, Configuration.LibationVersion));
-
+				{
+					await Task.WhenAll(finalTasks);
+				}
+				catch when (!moveFilesTask.IsFaulted)
+				{
+					//Swallow DownloadCoverArt, DownloadRecordsAsync, DownloadMetadataAsync, and SetCoverAsFolderIcon exceptions.
+					//Only fail if the downloaded audio files failed to move to Books directory
+				}
+				finally
+				{
+					if (moveFilesTask.IsCompletedSuccessfully && !cancellationToken.IsCancellationRequested)
+					{
+						libraryBook.UpdateBookStatus(LiberatedStatus.Liberated, Configuration.LibationVersion, audioFormat, audioVersion);
 						SetDirectoryTime(libraryBook, finalStorageDir);
+						foreach (var cacheFile in result.CacheFiles.Where(f => File.Exists(f.FilePath)))
+						{
+							//Delete cache files only after the download/decrypt operation completes successfully.
+							FileUtility.SaferDelete(cacheFile.FilePath);
+						}
 					}
 				}
 
 				return new StatusHandler();
-            }
-            finally
-            {
-                OnCompleted(libraryBook);
-            }
-        }
-
-        private async Task<bool> downloadAudiobookAsync(AudibleApi.Api api, Configuration config, DownloadOptions dlOptions)
-        {
-			var outFileName = AudibleFileStorage.Audio.GetInProgressFilename(dlOptions.LibraryBookDto, dlOptions.OutputFormat.ToString().ToLower());
-            var cacheDir = AudibleFileStorage.DownloadsInProgressDirectory;
-
-            if (dlOptions.DrmType is not DrmType.Adrm and not DrmType.Widevine)
-                abDownloader = new UnencryptedAudiobookDownloader(outFileName, cacheDir, dlOptions);
-            else
-            {
-                AaxcDownloadConvertBase converter
-                    = config.SplitFilesByChapter ?
-                    new AaxcDownloadMultiConverter(outFileName, cacheDir, dlOptions) :
-                    new AaxcDownloadSingleConverter(outFileName, cacheDir, dlOptions);
-
-                if (config.AllowLibationFixup)
-                    converter.RetrievedMetadata += Converter_RetrievedMetadata;
-
-                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(dlOptions.LibraryBook, path);
-
-            // REAL WORK DONE HERE
-            var success = await abDownloader.RunAsync();
-
-			if (success && config.SaveMetadataToFile)
-            {
-                var metadataFile = LibationFileManager.Templates.Templates.File.GetFilename(dlOptions.LibraryBookDto, Path.GetDirectoryName(outFileName), ".metadata.json");
-
-                var item = await api.GetCatalogProductAsync(dlOptions.LibraryBook.Book.AudibleProductId, AudibleApi.CatalogOptions.ResponseGroupOptions.ALL_OPTIONS);
-				item.SourceJson.Add(nameof(ContentMetadata.ChapterInfo), Newtonsoft.Json.Linq.JObject.FromObject(dlOptions.ContentMetadata.ChapterInfo));
-				item.SourceJson.Add(nameof(ContentMetadata.ContentReference), Newtonsoft.Json.Linq.JObject.FromObject(dlOptions.ContentMetadata.ContentReference));
-
-                File.WriteAllText(metadataFile, item.SourceJson.ToString());
-                OnFileCreated(dlOptions.LibraryBook, metadataFile);
-            }
-			return success;
+			}
+			catch when (cancellationToken.IsCancellationRequested)
+			{
+				Serilog.Log.Logger.Information("Download/Decrypt was cancelled. {@Book}", libraryBook.LogFriendly());
+				return new StatusHandler { "Cancelled" };
+			}
+			finally
+			{
+				OnCompleted(libraryBook);
+				cancellationTokenSource.Dispose();
+				cancellationTokenSource = null;
+			}
 		}
 
-		private void Converter_RetrievedMetadata(object sender, AAXClean.AppleTags tags)
+		private record AudiobookDecryptResult(bool Success, List<TempFile> ResultFiles, List<TempFile> CacheFiles);
+
+		private async Task<AudiobookDecryptResult> DownloadAudiobookAsync(AudibleApi.Api api, DownloadOptions dlOptions, CancellationToken cancellationToken)
 		{
-            if (sender is not AaxcDownloadConvertBase converter || converter.DownloadOptions is not DownloadOptions options)
+			var outpoutDir = AudibleFileStorage.DecryptInProgressDirectory;
+			var cacheDir = AudibleFileStorage.DownloadsInProgressDirectory;
+			var result = new AudiobookDecryptResult(false, [], []);
+
+			try
+			{
+				if (dlOptions.DrmType is not DrmType.Adrm and not DrmType.Widevine)
+					abDownloader = new UnencryptedAudiobookDownloader(outpoutDir, cacheDir, dlOptions);
+				else
+				{
+					AaxcDownloadConvertBase converter
+						= dlOptions.Config.SplitFilesByChapter && dlOptions.ChapterInfo.Count > 1 ?
+						new AaxcDownloadMultiConverter(outpoutDir, cacheDir, dlOptions) :
+						new AaxcDownloadSingleConverter(outpoutDir, cacheDir, dlOptions);
+
+					if (dlOptions.Config.AllowLibationFixup)
+						converter.RetrievedMetadata += Converter_RetrievedMetadata;
+
+					abDownloader = converter;
+				}
+
+				abDownloader.DecryptProgressUpdate += OnStreamingProgressChanged;
+				abDownloader.DecryptTimeRemaining += OnStreamingTimeRemaining;
+				abDownloader.RetrievedTitle += OnTitleDiscovered;
+				abDownloader.RetrievedAuthors += OnAuthorsDiscovered;
+				abDownloader.RetrievedNarrators += OnNarratorsDiscovered;
+				abDownloader.RetrievedCoverArt += AaxcDownloader_RetrievedCoverArt;
+				abDownloader.TempFileCreated += AbDownloader_TempFileCreated;
+
+				// REAL WORK DONE HERE
+				bool success = await abDownloader.RunAsync();
+				return result with { Success = success };
+			}
+			catch (Exception ex)
+			{
+				if (!cancellationToken.IsCancellationRequested)
+					Serilog.Log.Logger.Error(ex, "Error downloading audiobook {@Book}", dlOptions.LibraryBook.LogFriendly());
+				//don't throw any exceptions so the caller can delete any temp files.
+				return result;
+			}
+			finally
+			{
+				OnStreamingProgressChanged(new() { ProgressPercentage = 100 });
+			}
+
+			void AbDownloader_TempFileCreated(object? sender, TempFile e)
+			{
+				if (Path.GetDirectoryName(e.FilePath) == outpoutDir)
+				{
+					result.ResultFiles.Add(e);
+				}
+				else if (Path.GetDirectoryName(e.FilePath) == cacheDir)
+				{
+					result.CacheFiles.Add(e);
+					// Notify that the aaxc file has been created so that
+					// the UI can know about partially-downloaded files
+					if (getFileType(e) is FileType.AAXC)
+						OnFileCreated(dlOptions.LibraryBook, e.FilePath);
+				}
+			}
+		}
+
+		#region Decryptor event handlers
+		private void Converter_RetrievedMetadata(object? sender, AAXClean.AppleTags tags)
+		{
+			if (sender is not AaxcDownloadConvertBase converter ||
+				converter.AaxFile is not AAXClean.Mp4File aaxFile ||
+				converter.DownloadOptions is not DownloadOptions options ||
+				options.ChapterInfo.Chapters is not List<AAXClean.Chapter> chapters)
 				return;
 
 			#region Prevent erroneous truncation due to incorrect chapter info
@@ -179,155 +201,312 @@ namespace FileLiberator
 			//the chapter. This is never desirable, so pad the last chapter to match
 			//the original audio length.
 
-			var fileDuration = converter.AaxFile.Duration;
-            if (options.Config.StripAudibleBrandAudio)
-                fileDuration -= TimeSpan.FromMilliseconds(options.ContentMetadata.ChapterInfo.BrandOutroDurationMs);
+			var fileDuration = aaxFile.Duration;
+			if (options.Config.StripAudibleBrandAudio)
+				fileDuration -= TimeSpan.FromMilliseconds(options.ContentMetadata.ChapterInfo.BrandOutroDurationMs);
 
-            var durationDelta = fileDuration - options.ChapterInfo.EndOffset;
+			var durationDelta = fileDuration - options.ChapterInfo.EndOffset;
 			//Remove the last chapter and re-add it with the durationDelta that will
-            //make the chapter's end coincide with the end of the audio file.
-			var chapters = options.ChapterInfo.Chapters as List<AAXClean.Chapter>;
+			//make the chapter's end coincide with the end of the audio file.
 			var lastChapter = chapters[^1];
 
 			chapters.Remove(lastChapter);
 			options.ChapterInfo.Add(lastChapter.Title, lastChapter.Duration + durationDelta);
-            
-            #endregion
+			
+			#endregion
 
 			tags.Title ??= options.LibraryBookDto.TitleWithSubtitle;
-            tags.Album ??= tags.Title;
-            tags.Artist ??= string.Join("; ", options.LibraryBook.Book.Authors.Select(a => a.Name));
-            tags.AlbumArtists ??= tags.Artist;
+			tags.Album ??= tags.Title;
+			tags.Artist ??= string.Join("; ", options.LibraryBook.Book.Authors.Select(a => a.Name));
+			tags.AlbumArtists ??= tags.Artist;
 			tags.Generes = string.Join(", ", options.LibraryBook.Book.LowestCategoryNames());
-            tags.ProductID ??= options.ContentMetadata.ContentReference.Sku;
-            tags.Comment ??= options.LibraryBook.Book.Description;
-            tags.LongDescription ??= tags.Comment;
-            tags.Publisher ??= options.LibraryBook.Book.Publisher;
+			tags.ProductID ??= options.ContentMetadata.ContentReference.Sku;
+			tags.Comment ??= options.LibraryBook.Book.Description;
+			tags.LongDescription ??= tags.Comment;
+			tags.Publisher ??= options.LibraryBook.Book.Publisher;
 			tags.Narrator ??= string.Join("; ", options.LibraryBook.Book.Narrators.Select(n => n.Name));
 			tags.Asin = options.LibraryBook.Book.AudibleProductId;
 			tags.Acr = options.ContentMetadata.ContentReference.Acr;
 			tags.Version = options.ContentMetadata.ContentReference.Version;
 			if (options.LibraryBook.Book.DatePublished is DateTime pubDate)
-            {
-                tags.Year ??= pubDate.Year.ToString();
-                tags.ReleaseDate ??= pubDate.ToString("dd-MMM-yyyy");
-            }
-        }
-
-        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.TitleWithSubtitle.Length > 53)
-                    ? $"{libraryBook.Book.TitleWithSubtitle.Truncate(50)}..."
-                    : libraryBook.Book.TitleWithSubtitle;
-                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 (Configuration.Instance.AllowLibationFixup)
-            {
-                try
-                {
-                    e = OnRequestCoverArt();
-                    abDownloader.SetCoverArt(e);
-                }
-                catch (Exception ex)
-                {
-                    Serilog.Log.Logger.Error(ex, "Failed to retrieve cover art from server.");
-                }
-            }
-            
-            if (e is not null)
-                OnCoverImageDiscovered(e);
+			{
+				tags.Year ??= pubDate.Year.ToString();
+				tags.ReleaseDate ??= pubDate.ToString("dd-MMM-yyyy");
+			}
 		}
 
-        /// <summary>Move new files to 'Books' directory</summary>
-        /// <returns>Return directory if audiobook file(s) were successfully created and can be located on disk. Else null.</returns>
-        private static void moveFilesToBooksDir(LibraryBook libraryBook, List<FilePathCache.CacheEntry> entries)
-        {
-            // create final directory. move each file into it
-            var destinationDir = getDestinationDirectory(libraryBook);
-
-			for (var i = 0; i < entries.Count; i++)
-            {
-                var entry = entries[i];
-
-                var realDest
-                    = FileUtility.SaferMoveToValidPath(
-                        entry.Path,
-                        Path.Combine(destinationDir, Path.GetFileName(entry.Path)),
-                        Configuration.Instance.ReplacementCharacters,
-                        overwrite: Configuration.Instance.OverwriteExisting);
-
-                SetFileTime(libraryBook, realDest);
-				FilePathCache.Insert(libraryBook.Book.AudibleProductId, realDest);
-
-                // 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 };
-            }
-
-			var cue = entries.FirstOrDefault(f => f.FileType == FileType.Cue);
-            if (cue != default)
-            {
-                Cue.UpdateFileName(cue.Path, getFirstAudioFile(entries).Path);
-				SetFileTime(libraryBook, cue.Path);
+		private void AaxcDownloader_RetrievedCoverArt(object? sender, byte[]? e)
+		{
+			if (Configuration.Instance.AllowLibationFixup && sender is AaxcDownloadConvertBase downloader)
+			{
+				try
+				{
+					e = OnRequestCoverArt();
+					downloader.SetCoverArt(e);
+				}
+				catch (Exception ex)
+				{
+					Serilog.Log.Logger.Error(ex, "Failed to retrieve cover art from server.");
+				}
 			}
 
-            AudibleFileStorage.Audio.Refresh();
-        }
+			if (e is not null)
+				OnCoverImageDiscovered(e);
+		}
+		#endregion
 
-        private static string getDestinationDirectory(LibraryBook libraryBook)
-        {
-			var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
-            if (!Directory.Exists(destinationDir))
-                Directory.CreateDirectory(destinationDir);
-            return destinationDir;
+		#region Validation
+
+		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.TitleWithSubtitle.Length > 53)
+					? $"{libraryBook.Book.TitleWithSubtitle.Truncate(50)}..."
+					: libraryBook.Book.TitleWithSubtitle;
+				var errorBookTitle = $"{title} [{libraryBook.Book.AudibleProductId}]";
+				return errorBookTitle;
+			};
+
+			if (string.IsNullOrWhiteSpace(libraryBook.Account))
+				throw new InvalidOperationException(errorString("Account"));
+
+			if (string.IsNullOrWhiteSpace(libraryBook.Book.Locale))
+				throw new InvalidOperationException(errorString("Locale"));
+		}
+		#endregion
+
+		#region Post-success routines
+		/// <summary>Read the audio format from the audio file's metadata.</summary>
+		public AudioFormat GetFileFormatInfo(DownloadOptions options, TempFile firstAudioFile)
+		{
+			try
+			{
+				return firstAudioFile.Extension.ToLowerInvariant() switch
+				{
+					".m4b" or ".m4a" or ".mp4" => GetMp4AudioFormat(),
+					".mp3" => AudioFormatDecoder.FromMpeg3(firstAudioFile.FilePath),
+					_ => AudioFormat.Default
+				};
+			}
+			catch (Exception ex)
+			{
+				//Failure to determine output audio format should not be considered a failure to download the book
+				Serilog.Log.Logger.Error(ex, "Error determining output audio format for {@Book}. File = '{@audioFile}'", options.LibraryBook, firstAudioFile);
+				return AudioFormat.Default;
+			}
+
+			AudioFormat GetMp4AudioFormat()
+				=> abDownloader is AaxcDownloadConvertBase converter && converter.AaxFile is AAXClean.Mp4File mp4File
+				? AudioFormatDecoder.FromMpeg4(mp4File)
+				: AudioFormatDecoder.FromMpeg4(firstAudioFile.FilePath);
 		}
 
-		private static FilePathCache.CacheEntry getFirstAudioFile(IEnumerable<FilePathCache.CacheEntry> entries)
-            => entries.FirstOrDefault(f => f.FileType == FileType.Audio);
+		/// <summary>Move new files to 'Books' directory</summary>
+		/// <returns>Return directory if audiobook file(s) were successfully created and can be located on disk. Else null.</returns>
+		private void MoveFilesToBooksDir(LibraryBook libraryBook, LongPath destinationDir, List<TempFile> entries, CancellationToken cancellationToken)
+		{
+			cancellationToken.ThrowIfCancellationRequested();
+			AverageSpeed averageSpeed = new();
 
-		private static void downloadCoverArt(DownloadOptions options)
-        {
-			if (!Configuration.Instance.DownloadCoverArt) return;
+			var totalSizeToMove = entries.Sum(f => new FileInfo(f.FilePath).Length);
+			long totalBytesMoved = 0;
 
-            var coverPath = "[null]";
+			for (var i = 0; i < entries.Count; i++)
+			{
+				var entry = entries[i];
 
-            try
-            {
-                var destinationDir = getDestinationDirectory(options.LibraryBook);
-                coverPath = AudibleFileStorage.Audio.GetBooksDirectoryFilename(options.LibraryBookDto, ".jpg");
-                coverPath = Path.Combine(destinationDir, Path.GetFileName(coverPath));
+				var destFileName
+					= AudibleFileStorage.Audio.GetCustomDirFilename(
+						libraryBook,
+						destinationDir,
+						entry.Extension,
+						entry.PartProperties,
+						Configuration.Instance.OverwriteExisting);
 
-                if (File.Exists(coverPath))
-                    FileUtility.SaferDelete(coverPath);
+				var realDest
+					= FileUtility.SaferMoveToValidPath(
+						entry.FilePath,
+						destFileName,
+						Configuration.Instance.ReplacementCharacters,
+						entry.Extension,
+						Configuration.Instance.OverwriteExisting);
 
-                var picBytes = PictureStorage.GetPictureSynchronously(new(options.LibraryBook.Book.PictureLarge ?? options.LibraryBook.Book.PictureId, PictureSize.Native));
-                if (picBytes.Length > 0)
-                {
-                    File.WriteAllBytes(coverPath, picBytes);
-                    SetFileTime(options.LibraryBook, coverPath);
-                }
-            }
-            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 {options.LibraryBook.Book.AudibleProductId} to {coverPath} catalog product.");
-            }
-        }
-    }
+				#region File Move Progress
+				totalBytesMoved += new FileInfo(realDest).Length;
+				averageSpeed.AddPosition(totalBytesMoved);
+				var estSecsRemaining = (totalSizeToMove - totalBytesMoved) / averageSpeed.Average;
+
+				if (double.IsNormal(estSecsRemaining))
+					OnStreamingTimeRemaining(TimeSpan.FromSeconds(estSecsRemaining));
+
+				OnStreamingProgressChanged(new DownloadProgress
+					{
+						ProgressPercentage = 100d * totalBytesMoved / totalSizeToMove,
+						BytesReceived = totalBytesMoved,
+						TotalBytesToReceive = totalSizeToMove
+					});
+				#endregion
+
+				// propagate corrected path for cue file (after this for-loop)
+				entries[i] = entry with { FilePath = realDest };
+
+				SetFileTime(libraryBook, realDest);
+				OnFileCreated(libraryBook, realDest);
+				cancellationToken.ThrowIfCancellationRequested();
+			}
+
+			if (entries.FirstOrDefault(f => getFileType(f) is FileType.Cue) is TempFile cue
+				&& getFirstAudioFile(entries)?.FilePath is LongPath audioFilePath)
+			{
+				Cue.UpdateFileName(cue.FilePath, audioFilePath);
+				SetFileTime(libraryBook, cue.FilePath);
+			}
+
+			cancellationToken.ThrowIfCancellationRequested();
+			AudibleFileStorage.Audio.Refresh();
+		}
+
+		private void DownloadCoverArt(LongPath destinationDir, DownloadOptions options, CancellationToken cancellationToken)
+		{
+			if (!options.Config.DownloadCoverArt) return;
+
+			var coverPath = "[null]";
+
+			try
+			{
+				coverPath
+					= AudibleFileStorage.Audio.GetCustomDirFilename(
+						options.LibraryBook,
+						destinationDir,
+						extension: ".jpg",
+						returnFirstExisting: Configuration.Instance.OverwriteExisting);
+
+				if (File.Exists(coverPath))
+					FileUtility.SaferDelete(coverPath);
+
+				var picBytes = PictureStorage.GetPictureSynchronously(new(options.LibraryBook.Book.PictureLarge ?? options.LibraryBook.Book.PictureId, PictureSize.Native), cancellationToken);
+				if (picBytes.Length > 0)
+				{
+					File.WriteAllBytes(coverPath, picBytes);
+					SetFileTime(options.LibraryBook, coverPath);
+					OnFileCreated(options.LibraryBook, coverPath);
+				}
+			}
+			catch (Exception ex)
+			{
+				//Failure to download cover art should not be considered a failure to download the book
+				if (!cancellationToken.IsCancellationRequested)
+					Serilog.Log.Logger.Error(ex, "Error downloading cover art for {@Book} to {@metadataFile}.", options.LibraryBook, coverPath);
+				throw;
+			}
+		}
+
+		public async Task DownloadRecordsAsync(AudibleApi.Api api, LongPath destinationDir, DownloadOptions options, CancellationToken cancellationToken)
+		{
+			if (!options.Config.DownloadClipsBookmarks) return;
+
+			var recordsPath = "[null]";
+			var format = options.Config.ClipsBookmarksFileFormat;
+			var formatExtension = FileUtility.GetStandardizedExtension(format.ToString().ToLowerInvariant());
+
+			try
+			{
+				recordsPath
+					= AudibleFileStorage.Audio.GetCustomDirFilename(
+						options.LibraryBook,
+						destinationDir,
+						extension: formatExtension,
+						returnFirstExisting: Configuration.Instance.OverwriteExisting);
+
+				if (File.Exists(recordsPath))
+					FileUtility.SaferDelete(recordsPath);
+
+				var records = await api.GetRecordsAsync(options.AudibleProductId);
+
+				switch (format)
+				{
+					case Configuration.ClipBookmarkFormat.CSV:
+						RecordExporter.ToCsv(recordsPath, records);
+						break;
+					case Configuration.ClipBookmarkFormat.Xlsx:
+						RecordExporter.ToXlsx(recordsPath, records);
+						break;
+					case Configuration.ClipBookmarkFormat.Json:
+						RecordExporter.ToJson(recordsPath, options.LibraryBook, records);
+						break;
+					default:
+						throw new NotSupportedException($"Unsupported record export format: {format}");
+				}
+
+				SetFileTime(options.LibraryBook, recordsPath);
+				OnFileCreated(options.LibraryBook, recordsPath);
+			}
+			catch (Exception ex)
+			{
+				//Failure to download records should not be considered a failure to download the book
+				if (!cancellationToken.IsCancellationRequested)
+					Serilog.Log.Logger.Error(ex, "Error downloading clips and bookmarks for {@Book} to {@recordsPath}.", options.LibraryBook, recordsPath);
+				throw;
+			}
+		}
+
+		private async Task DownloadMetadataAsync(AudibleApi.Api api, LongPath destinationDir, DownloadOptions options, CancellationToken cancellationToken)
+		{
+			if (!options.Config.SaveMetadataToFile) return;
+
+			string metadataPath = "[null]";
+
+			try
+			{
+				metadataPath
+					= AudibleFileStorage.Audio.GetCustomDirFilename(
+						options.LibraryBook,
+						destinationDir,
+						extension: ".metadata.json",
+						returnFirstExisting: Configuration.Instance.OverwriteExisting);
+
+				if (File.Exists(metadataPath))
+					FileUtility.SaferDelete(metadataPath);
+
+				var item = await api.GetCatalogProductAsync(options.LibraryBook.Book.AudibleProductId, AudibleApi.CatalogOptions.ResponseGroupOptions.ALL_OPTIONS);
+				item.SourceJson.Add(nameof(ContentMetadata.ChapterInfo), Newtonsoft.Json.Linq.JObject.FromObject(options.ContentMetadata.ChapterInfo));
+				item.SourceJson.Add(nameof(ContentMetadata.ContentReference), Newtonsoft.Json.Linq.JObject.FromObject(options.ContentMetadata.ContentReference));
+
+				cancellationToken.ThrowIfCancellationRequested();
+				File.WriteAllText(metadataPath, item.SourceJson.ToString());
+				SetFileTime(options.LibraryBook, metadataPath);
+				OnFileCreated(options.LibraryBook, metadataPath);
+			}
+			catch (Exception ex)
+			{
+				//Failure to download metadata should not be considered a failure to download the book
+				if (!cancellationToken.IsCancellationRequested)
+					Serilog.Log.Logger.Error(ex, "Error downloading metdatat of {@Book} to {@metadataFile}.", options.LibraryBook, metadataPath);
+				throw;
+			}
+		}
+		#endregion
+
+		#region Macros
+		private static string getDestinationDirectory(LibraryBook libraryBook)
+		{
+			var destinationDir = AudibleFileStorage.Audio.GetDestinationDirectory(libraryBook);
+			if (!Directory.Exists(destinationDir))
+				Directory.CreateDirectory(destinationDir);
+			return destinationDir;
+		}
+
+		private static FileType getFileType(TempFile file)
+			=> FileTypes.GetFileTypeFromPath(file.FilePath);
+		private static TempFile? getFirstAudioFile(IEnumerable<TempFile> entries)
+			=> entries.FirstOrDefault(f => File.Exists(f.FilePath) && getFileType(f) is FileType.Audio);
+		private static IEnumerable<TempFile> getAaxcFiles(IEnumerable<TempFile> entries)
+			=> entries.Where(f => File.Exists(f.FilePath) && (getFileType(f) is FileType.AAXC || f.Extension.Equals(".key", StringComparison.OrdinalIgnoreCase)));
+		#endregion
+	}
 }

Source/FileLiberator/DownloadOptions.Factory.cs

@@ -10,7 +10,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net.Http;
-using System.Text.RegularExpressions;
+using System.Threading;
 using System.Threading.Tasks;
 
 #nullable enable
@@ -24,9 +24,10 @@ public partial class DownloadOptions
 	/// <summary>
 	/// Initiate an audiobook download from the audible api.
 	/// </summary>
-	public static async Task<DownloadOptions> InitiateDownloadAsync(Api api, Configuration config, LibraryBook libraryBook)
+	public static async Task<DownloadOptions> InitiateDownloadAsync(Api api, Configuration config, LibraryBook libraryBook, CancellationToken token)
 	{
-		var license = await ChooseContent(api, libraryBook, config);
+		var license = await ChooseContent(api, libraryBook, config, token);
+		token.ThrowIfCancellationRequested();
 
 		//Some audiobooks will have incorrect chapters in the metadata returned from the license request,
 		//but the metadata returned by the content metadata endpoint will be correct. Call the content
@@ -36,9 +37,8 @@ public partial class DownloadOptions
 		if (metadata.ChapterInfo.RuntimeLengthMs == license.ContentMetadata.ChapterInfo.RuntimeLengthMs)
 			license.ContentMetadata.ChapterInfo = metadata.ChapterInfo;
 
-		var options = BuildDownloadOptions(libraryBook, config, license);
-
-		return options;
+		token.ThrowIfCancellationRequested();
+		return BuildDownloadOptions(libraryBook, config, license);
 	}
 
 	private class LicenseInfo
@@ -57,16 +57,18 @@ public partial class DownloadOptions
 			=> voucher is null ? null : [new KeyData(voucher.Key, voucher.Iv)];
 	}
 
-	private static async Task<LicenseInfo> ChooseContent(Api api, LibraryBook libraryBook, Configuration config)
+	private static async Task<LicenseInfo> ChooseContent(Api api, LibraryBook libraryBook, Configuration config, CancellationToken token)
 	{
 		var dlQuality = config.FileDownloadQuality == Configuration.DownloadQuality.Normal ? DownloadQuality.Normal : DownloadQuality.High;
 
 		if (!config.UseWidevine || await Cdm.GetCdmAsync() is not Cdm cdm)
 		{
+			token.ThrowIfCancellationRequested();
 			var license = await api.GetDownloadLicenseAsync(libraryBook.Book.AudibleProductId, dlQuality);
 			return new LicenseInfo(license);
 		}
 
+		token.ThrowIfCancellationRequested();
 		try
 		{
 			//try to request a widevine content license using the user's spatial audio settings
@@ -85,8 +87,8 @@ public partial class DownloadOptions
 				return new LicenseInfo(contentLic);
 
 			using var client = new HttpClient();
-			using var mpdResponse = await client.GetAsync(contentLic.LicenseResponse);
-			var dash = new MpegDash(mpdResponse.Content.ReadAsStream());
+			using var mpdResponse = await client.GetAsync(contentLic.LicenseResponse, token);
+			var dash = new MpegDash(mpdResponse.Content.ReadAsStream(token));
 
 			if (!dash.TryGetUri(new Uri(contentLic.LicenseResponse), out var contentUri))
 				throw new InvalidDataException("Failed to get mpeg-dash content download url.");
@@ -109,7 +111,6 @@ public partial class DownloadOptions
 		}
 	}
 
-
 	private static DownloadOptions BuildDownloadOptions(LibraryBook libraryBook, Configuration config, LicenseInfo licInfo)
 	{
 		long chapterStartMs
@@ -123,13 +124,6 @@ public partial class DownloadOptions
 			RuntimeLength = TimeSpan.FromMilliseconds(licInfo.ContentMetadata.ChapterInfo.RuntimeLengthMs),
 		};
 
-		if (TryGetAudioInfo(licInfo.ContentMetadata.ContentUrl, out int? bitrate, out int? sampleRate, out int? channels))
-		{
-			dlOptions.LibraryBookDto.BitRate = bitrate;
-			dlOptions.LibraryBookDto.SampleRate = sampleRate;
-			dlOptions.LibraryBookDto.Channels = channels;
-		}
-
 		var titleConcat = config.CombineNestedChapterTitles ? ": " : null;
 		var chapters
 			= flattenChapters(licInfo.ContentMetadata.ChapterInfo.Chapters, titleConcat)
@@ -156,43 +150,6 @@ public partial class DownloadOptions
 		return dlOptions;
 	}
 
-	/// <summary>
-	/// The most reliable way to get these audio file properties is from the filename itself.
-	/// Using AAXClean to read the metadata works well for everything except AC-4 bitrate.
-	/// </summary>
-	private static bool TryGetAudioInfo(ContentUrl? contentUrl, out int? bitrate, out int? sampleRate, out int? channels)
-	{
-		bitrate = sampleRate = channels = null;
-
-		if (contentUrl?.OfflineUrl is not string url || !Uri.TryCreate(url, default, out var uri))
-			return false;
-
-		var file = Path.GetFileName(uri.LocalPath);
-
-		var match = AdrmAudioProperties().Match(file);
-		if (match.Success)
-		{
-			bitrate = int.Parse(match.Groups[1].Value);
-			sampleRate = int.Parse(match.Groups[2].Value);
-			channels = int.Parse(match.Groups[3].Value);
-			return true;
-		}
-		else if ((match = WidevineAudioProperties().Match(file)).Success)
-		{
-			bitrate = int.Parse(match.Groups[2].Value);
-			sampleRate = int.Parse(match.Groups[1].Value) * 1000;
-			channels = match.Groups[3].Value switch
-			{
-				"ec3" => 6,
-				"ac4" => 3,
-				_ => null
-			};
-			return true;
-		}
-
-		return false;
-	}
-
 	public static LameConfig GetLameOptions(Configuration config)
 	{
 		LameConfig lameConfig = new()
@@ -347,12 +304,4 @@ public partial class DownloadOptions
 			chapters.Remove(chapters[^1]);
 		}
 	}
-
-	static double RelativePercentDifference(long num1, long num2)
-		=> Math.Abs(num1 - num2) / (double)(num1 + num2);
-
-	[GeneratedRegex(@".+_(\d+)_(\d+)-(\w+).mp4", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
-	private static partial Regex WidevineAudioProperties();
-	[GeneratedRegex(@".+_lc_(\d+)_(\d+)_(\d+).aax", RegexOptions.Singleline | RegexOptions.IgnoreCase)]
-	private static partial Regex AdrmAudioProperties();
 }

Source/FileLiberator/DownloadOptions.cs

@@ -3,10 +3,8 @@ using AAXClean;
 using Dinah.Core;
 using DataLayer;
 using LibationFileManager;
-using System.Threading.Tasks;
 using System;
 using System.IO;
-using ApplicationServices;
 using LibationFileManager.Templates;
 
 #nullable enable
@@ -28,15 +26,12 @@ namespace FileLiberator
 		public string Language => LibraryBook.Book.Language;
 		public string? AudibleProductId => LibraryBookDto.AudibleProductId;
 		public string? SeriesName => LibraryBookDto.FirstSeries?.Name;
-		public float? SeriesNumber => LibraryBookDto.FirstSeries?.Number;
+		public string? SeriesNumber => LibraryBookDto.FirstSeries?.Number;
 		public NAudio.Lame.LameConfig? LameConfig { get; }
 		public string UserAgent => AudibleApi.Resources.Download_User_Agent;
-		public bool TrimOutputToChapterLength => Config.AllowLibationFixup && Config.StripAudibleBrandAudio;
 		public bool StripUnabridged => Config.AllowLibationFixup && Config.StripUnabridged;
 		public bool CreateCueSheet => Config.CreateCueSheet;
-		public bool DownloadClipsBookmarks => Config.DownloadClipsBookmarks;
 		public long DownloadSpeedBps => Config.DownloadSpeedLimit;
-		public bool RetainEncryptedFile => Config.RetainAaxFile;
 		public bool FixupFile => Config.AllowLibationFixup;
 		public bool Downsample => Config.AllowLibationFixup && Config.LameDownsampleMono;
 		public bool MatchSourceBitrate => Config.AllowLibationFixup && Config.LameMatchSourceBR && Config.LameTargetBitrate;
@@ -45,45 +40,9 @@ namespace FileLiberator
 		public AudibleApi.Common.DrmType DrmType { get; }
 		public AudibleApi.Common.ContentMetadata ContentMetadata { get; }
 
-		public string GetMultipartFileName(MultiConvertFileProperties props)
-		{
-			var baseDir = Path.GetDirectoryName(props.OutputFileName);
-			var extension = Path.GetExtension(props.OutputFileName);
-			return Templates.ChapterFile.GetFilename(LibraryBookDto, props, baseDir!, extension);
-		}
-
 		public string GetMultipartTitle(MultiConvertFileProperties props)
 			=> Templates.ChapterTitle.GetName(LibraryBookDto, props);
 
-		public async Task<string> SaveClipsAndBookmarksAsync(string fileName)
-		{
-			if (DownloadClipsBookmarks)
-			{
-				var format = Config.ClipsBookmarksFileFormat;
-
-				var formatExtension = format.ToString().ToLowerInvariant();
-				var filePath = Path.ChangeExtension(fileName, formatExtension);
-
-				var api = await LibraryBook.GetApiAsync();
-				var records = await api.GetRecordsAsync(LibraryBook.Book.AudibleProductId);
-
-				switch(format)
-				{
-					case Configuration.ClipBookmarkFormat.CSV:
-						RecordExporter.ToCsv(filePath, records);
-						break;
-					case Configuration.ClipBookmarkFormat.Xlsx:
-						RecordExporter.ToXlsx(filePath, records);
-						break;
-					case Configuration.ClipBookmarkFormat.Json:
-						RecordExporter.ToJson(filePath, LibraryBook, records);
-						break;
-				}
-				return filePath;
-			}
-			return string.Empty;
-		}
-
 		public Configuration Config { get; }
 		private readonly IDisposable cancellation;
 		public void Dispose()
@@ -108,8 +67,8 @@ namespace FileLiberator
 			ContentMetadata = licInfo.ContentMetadata;
 			InputType
 			= licInfo.DrmType is AudibleApi.Common.DrmType.Widevine ? AAXClean.FileType.Dash
-			: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 8 && licInfo.DecryptionKeys[0].KeyPart2 is null ? AAXClean.FileType.Aax
-			: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 32 && licInfo.DecryptionKeys[0].KeyPart2?.Length == 32 ? AAXClean.FileType.Aaxc
+			: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 4 && licInfo.DecryptionKeys[0].KeyPart2 is null ? AAXClean.FileType.Aax
+			: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 16 && licInfo.DecryptionKeys[0].KeyPart2?.Length == 16 ? AAXClean.FileType.Aaxc
 			: null;
 
 			//If DrmType is not Adrm or Widevine, the delivered file is an unencrypted mp3.
@@ -123,7 +82,6 @@ namespace FileLiberator
 
 			// no null/empty check for key/iv. unencrypted files do not have them
 			LibraryBookDto = LibraryBook.ToDto();
-			LibraryBookDto.Codec = licInfo.ContentMetadata.ContentReference.Codec;
 
 			cancellation =
 				config

Source/FileLiberator/UtilityExtensions.cs

@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 using AudibleUtilities;
 using DataLayer;
 using Dinah.Core;
+using LibationFileManager;
 using LibationFileManager.Templates;
 
 #nullable enable
@@ -61,7 +62,13 @@ namespace FileLiberator
 				IsPodcastParent = libraryBook.Book.IsEpisodeParent(),
 				IsPodcast = libraryBook.Book.IsEpisodeChild() || libraryBook.Book.IsEpisodeParent(),
 
-				Language = libraryBook.Book.Language
+				Language = libraryBook.Book.Language,
+				Codec = libraryBook.Book.UserDefinedItem.LastDownloadedFormat?.CodecString,
+				BitRate = libraryBook.Book.UserDefinedItem.LastDownloadedFormat?.BitRate,
+				SampleRate = libraryBook.Book.UserDefinedItem.LastDownloadedFormat?.SampleRate,
+				Channels = libraryBook.Book.UserDefinedItem.LastDownloadedFormat?.ChannelCount,
+				LibationVersion = libraryBook.Book.UserDefinedItem.LastDownloadedVersion?.ToVersionString(),
+				FileVersion = libraryBook.Book.UserDefinedItem.LastDownloadedFileVersion
 			};
 		}
 
@@ -76,7 +83,7 @@ namespace FileLiberator
 				.Select(sb
 					=> new SeriesDto(
 						sb.Series.Name,
-						sb.Book.IsEpisodeParent() ? null : sb.Index,
+						sb.Book.IsEpisodeParent() ? null : sb.Order,
 						sb.Series.AudibleSeriesId)
 				).ToList();
 		}

Source/FileManager/FileManager.csproj

@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="Dinah.Core" Version="9.0.1.1" />
-    <PackageReference Include="Polly" Version="8.5.2" />
+    <PackageReference Include="Polly" Version="8.6.2" />
   </ItemGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

Source/FileManager/FileSystemTest.cs

@@ -0,0 +1,74 @@
+using System;
+using System.IO;
+
+namespace FileManager
+{
+	public static class FileSystemTest
+	{
+		/// <summary>
+		/// Additional characters which are illegal for filenames in Windows environments.
+		/// Double quotes and slashes are already illegal filename characters on all platforms,
+		/// so they are not included here.
+		/// </summary>
+		public static string AdditionalInvalidWindowsFilenameCharacters { get; } = "<>|:*?";
+
+		/// <summary>
+		/// Test if the directory supports filenames with characters that are invalid on Windows (:, *, ?, &lt;, &gt;, |).
+		/// </summary>
+		public static bool CanWriteWindowsInvalidChars(LongPath directoryName)
+		{
+			var testFile = Path.Combine(directoryName, AdditionalInvalidWindowsFilenameCharacters + Guid.NewGuid().ToString());
+			return CanWriteFile(testFile);
+		}
+
+		/// <summary>
+		/// Test if the directory supports filenames with 255 unicode characters.
+		/// </summary>
+		public static bool CanWrite255UnicodeChars(LongPath directoryName)
+		{
+			const char unicodeChar = 'ü';
+			var testFileName = new string(unicodeChar, 255);
+			var testFile = Path.Combine(directoryName, testFileName);
+			return CanWriteFile(testFile);
+		}
+
+		/// <summary>
+		/// Test if a directory has write access by attempting to create an empty file in it.
+		/// <para/>Returns true even if the temporary file can not be deleted.
+		/// </summary>
+		public static bool CanWriteDirectory(LongPath directoryName)
+		{
+			if (!Directory.Exists(directoryName))
+				return false;
+
+			Serilog.Log.Logger.Debug("Testing write permissions for directory: {@DirectoryName}", directoryName);
+			var testFilePath = Path.Combine(directoryName, Guid.NewGuid().ToString());
+			return CanWriteFile(testFilePath);
+		}
+
+		private static bool CanWriteFile(LongPath filename)
+		{
+			try
+			{
+				Serilog.Log.Logger.Debug("Testing ability to write filename: {@filename}", filename);
+				File.WriteAllBytes(filename, []);
+				Serilog.Log.Logger.Debug("Deleting test file after successful write: {@filename}", filename);
+				try
+				{
+					FileUtility.SaferDelete(filename);
+				}
+				catch (Exception ex)
+				{
+					//An error deleting the file doesn't constitute a write failure.
+					Serilog.Log.Logger.Debug(ex, "Error deleting test file: {@filename}", filename);
+				}
+				return true;
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Logger.Debug(ex, "Error writing test file: {@filename}", filename);
+				return false;
+			}
+		}
+	}
+}

Source/FileManager/LogArchiver.cs

@@ -56,7 +56,7 @@ namespace FileManager
 		{
 			ArgumentValidator.EnsureNotNull(name, nameof(name));
 
-			name = ReplacementCharacters.Barebones.ReplaceFilenameChars(name);
+			name = ReplacementCharacters.Barebones(true).ReplaceFilenameChars(name);
 			return Task.Run(() => AddFileInternal(name, contents.Span, comment));			
 		}
 

Source/FileManager/ReplacementCharacters.cs

@@ -74,12 +74,14 @@ namespace FileManager
 		}
 		public override int GetHashCode() => Replacements.GetHashCode();
 
-		public static readonly ReplacementCharacters Default
-			= IsWindows
-			? new()
-			{
-				Replacements = new Replacement[]
-				{
+		public static ReplacementCharacters Default(bool ntfs) => ntfs ? HiFi_NTFS : HiFi_Other;
+		public static ReplacementCharacters LoFiDefault(bool ntfs) => ntfs ? LoFi_NTFS : LoFi_Other;
+		public static ReplacementCharacters Barebones(bool ntfs) => ntfs ? BareBones_NTFS : BareBones_Other;
+
+		#region Defaults
+		private static readonly ReplacementCharacters HiFi_NTFS = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("∕"),
 					Replacement.FilenameBackSlash(""),
@@ -91,28 +93,23 @@ namespace FileManager
 					Replacement.Colon("_"),
 					Replacement.Asterisk("✱"),
 					Replacement.QuestionMark("？"),
-					Replacement.Pipe("⏐"),
-				}
-			}
-			: new()
-			{
-				Replacements = new Replacement[]
-				{
+					Replacement.Pipe("⏐")]
+		};
+
+		private static readonly ReplacementCharacters HiFi_Other = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("∕"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("“"),
 					Replacement.CloseQuote("”"),
-					Replacement.OtherQuote("\"")
-				}
-			};
+					Replacement.OtherQuote("\"")]
+		};
 
-		public static readonly ReplacementCharacters LoFiDefault
-			= IsWindows
-			? new()
-			{
-				Replacements = new Replacement[]
-				{
+		private static readonly ReplacementCharacters LoFi_NTFS = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("_"),
@@ -121,56 +118,54 @@ namespace FileManager
 					Replacement.OtherQuote("'"),
 					Replacement.OpenAngleBracket("{"),
 					Replacement.CloseAngleBracket("}"),
-					Replacement.Colon("-"),
-				}
-			}
-			: new ()
-			{
-				Replacements = new Replacement[]
-				{
+					Replacement.Colon("-")]
+		};
+
+		private static readonly ReplacementCharacters LoFi_Other = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("\""),
 					Replacement.CloseQuote("\""),
-					Replacement.OtherQuote("\"")
-				}
-			};
+					Replacement.OtherQuote("\"")]
+		};
 
-		public static readonly ReplacementCharacters Barebones
-			= IsWindows
-			? new ()
-			{
-				Replacements = new Replacement[]
-				{
+		private static readonly ReplacementCharacters BareBones_NTFS = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("_"),
 					Replacement.OpenQuote("_"),
 					Replacement.CloseQuote("_"),
-					Replacement.OtherQuote("_")
-				}
-			}
-			: new ()
-			{
-				Replacements = new Replacement[]
-				{
+					Replacement.OtherQuote("_")]
+		};
+
+		private static readonly ReplacementCharacters BareBones_Other = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("\""),
 					Replacement.CloseQuote("\""),
-					Replacement.OtherQuote("\"")
-				}
-			};
+					Replacement.OtherQuote("\"")]
+		};
+		#endregion
+		/// <summary>
+		/// Characters to consider invalid in filenames in addition to those returned by <see cref="Path.GetInvalidFileNameChars()"/>
+		/// </summary>
+		public static char[] AdditionalInvalidFilenameCharacters { get; set; } = [];
 
-		private static bool IsWindows => Environment.OSVersion.Platform is PlatformID.Win32NT;
+		internal static bool IsWindows => Environment.OSVersion.Platform is PlatformID.Win32NT;
 
-		private static readonly char[] invalidPathChars = Path.GetInvalidFileNameChars().Except(new[] {
+		private static char[] invalidPathChars { get; } = Path.GetInvalidFileNameChars().Except(new[] {
 				Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar
 			}).ToArray();
 
-		private static readonly char[] invalidSlashes = Path.GetInvalidFileNameChars().Intersect(new[] {
+		private static char[] invalidSlashes { get; } = Path.GetInvalidFileNameChars().Intersect(new[] {
 				Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar
 			}).ToArray();
 
@@ -229,8 +224,11 @@ namespace FileManager
 			return DefaultReplacement;
 		}
 
+		private static bool CharIsPathInvalid(char c)
+			=> invalidPathChars.Contains(c) || AdditionalInvalidFilenameCharacters.Contains(c);
+
 		public static bool ContainsInvalidPathChar(string path)
-			=> path.Any(c => invalidPathChars.Contains(c));
+			=> path.Any(CharIsPathInvalid);
 		public static bool ContainsInvalidFilenameChar(string path)
 			=> ContainsInvalidPathChar(path) || path.Any(c => invalidSlashes.Contains(c));
 
@@ -242,7 +240,7 @@ namespace FileManager
 			{
 				var c = fileName[i];
 
-				if (invalidPathChars.Contains(c)
+				if (CharIsPathInvalid(c)
 					|| invalidSlashes.Contains(c)
 					|| Replacements.Any(r => r.CharacterToReplace == c) /* Replace any other legal characters that they user wants. */ )
 				{
@@ -267,14 +265,14 @@ namespace FileManager
 
 				if (
 					(
-						invalidPathChars.Contains(c)
-						|| (	// Replace any other legal characters that they user wants.
+						CharIsPathInvalid(c)
+						|| (    // Replace any other legal characters that they user wants.
 								c != Path.DirectorySeparatorChar
 								&& c != Path.AltDirectorySeparatorChar
 								&& Replacements.Any(r => r.CharacterToReplace == c)
 							)
 					)
-					&& !(	// replace all colons except drive letter designator on Windows
+					&& !(   // replace all colons except drive letter designator on Windows
 							c == ':'
 							&& i == 1
 							&& Path.IsPathRooted(pathStr)
@@ -282,9 +280,9 @@ namespace FileManager
 					)
 				)
 				{
-						char preceding = i > 0 ? pathStr[i - 1] : default;
-						char succeeding = i < pathStr.Length - 1 ? pathStr[i + 1] : default;
-						builder.Append(GetPathCharReplacement(c, preceding, succeeding));
+					char preceding = i > 0 ? pathStr[i - 1] : default;
+					char succeeding = i < pathStr.Length - 1 ? pathStr[i + 1] : default;
+					builder.Append(GetPathCharReplacement(c, preceding, succeeding));
 				}
 				else
 					builder.Append(c);
@@ -301,23 +299,21 @@ namespace FileManager
 
 		public override object ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
 		{
+			var defaults = ReplacementCharacters.Default(ReplacementCharacters.IsWindows).Replacements;
+
 			var jObj = JObject.Load(reader);
 			var replaceArr = jObj[nameof(Replacement)];
-			var dict
-				= replaceArr?.ToObject<Replacement[]>()?.ToList()
-				?? ReplacementCharacters.Default.Replacements;
-
+			var dict = replaceArr?.ToObject<Replacement[]>()?.ToList() ?? defaults;
 
 			//Ensure that the first 6 replacements are for the expected chars and that all replacement strings are valid.
 			//If not, reset to default.
-
 			for (int i = 0; i < Replacement.FIXED_COUNT; i++)
 			{
 				if (dict.Count < Replacement.FIXED_COUNT
-					|| dict[i].CharacterToReplace != ReplacementCharacters.Barebones.Replacements[i].CharacterToReplace
-					|| dict[i].Description != ReplacementCharacters.Barebones.Replacements[i].Description)
+					|| dict[i].CharacterToReplace != defaults[i].CharacterToReplace
+					|| dict[i].Description != defaults[i].Description)
 				{
-					dict = ReplacementCharacters.Default.Replacements;
+					dict = defaults;
 					break;
 				}
 

Source/HangoverAvalonia/HangoverAvalonia.csproj

@@ -71,12 +71,12 @@
 	</ItemGroup>
 	<ItemGroup>
 
-		<PackageReference Include="Avalonia" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Desktop" Version="11.3.0" />
+		<PackageReference Include="Avalonia" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Desktop" Version="11.3.2" />
 		<!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-		<PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.3.0" />
-		<PackageReference Include="Avalonia.ReactiveUI" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.0" />
+		<PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.3.2" />
+		<PackageReference Include="Avalonia.ReactiveUI" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.2" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\HangoverBase\HangoverBase.csproj" />

Source/LibationAvalonia/App.axaml.cs

@@ -16,6 +16,8 @@ using Dinah.Core;
 using LibationAvalonia.Themes;
 using Avalonia.Data.Core.Plugins;
 using System.Linq;
+using LibationUiBase.Forms;
+using Avalonia.Controls;
 
 #nullable enable
 namespace LibationAvalonia
@@ -42,6 +44,9 @@ namespace LibationAvalonia
 
 			if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
 			{
+				MessageBoxBase.ShowAsyncImpl = (owner, message, caption, buttons, icon, defaultButton, saveAndRestorePosition) =>
+					MessageBox.Show(owner as Window, message, caption, buttons, icon, defaultButton, saveAndRestorePosition);
+
 				// Avoid duplicate validations from both Avalonia and the CommunityToolkit. 
 				// More info: https://docs.avaloniaui.net/docs/guides/development-guides/data-validation#manage-validationplugins
 				DisableAvaloniaDataAnnotationValidation();
@@ -106,7 +111,7 @@ namespace LibationAvalonia
 					if (setupDialog.Config.LibationSettingsAreValid)
 					{
 						string? theme = setupDialog.SelectedTheme.Content as string;
-						
+
 						setupDialog.Config.SetString(theme, nameof(ThemeVariant));
 
 						await RunMigrationsAsync(setupDialog.Config);
@@ -115,7 +120,10 @@ namespace LibationAvalonia
 						ShowMainWindow(desktop);
 					}
 					else
-						await CancelInstallation();
+					{
+						e.Cancel = true;
+						await CancelInstallation(setupDialog);
+					}
 				}
 				else if (setupDialog.IsReturningUser)
 				{
@@ -123,7 +131,8 @@ namespace LibationAvalonia
 				}
 				else
 				{
-					await CancelInstallation();
+					e.Cancel = true;
+					await CancelInstallation(setupDialog);
 					return;
 				}
 
@@ -134,11 +143,11 @@ namespace LibationAvalonia
 				var body = "An unrecoverable error occurred. Since this error happened before logging could be initialized, this error can not be written to the log file.";
 				try
 				{
-					await MessageBox.ShowAdminAlert(null, body, title, ex);
+					await MessageBox.ShowAdminAlert(setupDialog, body, title, ex);
 				}
 				catch
 				{
-					await MessageBox.Show($"{body}\r\n\r\n{ex.Message}\r\n\r\n{ex.StackTrace}", title, MessageBoxButtons.OK, MessageBoxIcon.Error);
+					await MessageBox.Show(setupDialog, $"{body}\r\n\r\n{ex.Message}\r\n\r\n{ex.StackTrace}", title, MessageBoxButtons.OK, MessageBoxIcon.Error);
 				}
 				return;
 			}
@@ -185,6 +194,7 @@ namespace LibationAvalonia
 			{
 				// path did not result in valid settings
 				var continueResult = await MessageBox.Show(
+					libationFilesDialog,
 					$"No valid settings were found at this location.\r\nWould you like to create a new install settings in this folder?\r\n\r\n{libationFilesDialog.SelectedDirectory}",
 					"New install?",
 					MessageBoxButtons.YesNo,
@@ -202,18 +212,18 @@ namespace LibationAvalonia
 						ShowMainWindow(desktop);
 					}
 					else
-						await CancelInstallation();
+						await CancelInstallation(libationFilesDialog);
 				}
 				else
-					await CancelInstallation();
+					await CancelInstallation(libationFilesDialog);
 			}
 
 			libationFilesDialog.Close();
 		}
 
-		static async Task CancelInstallation()
+		static async Task CancelInstallation(Window window)
 		{
-			await MessageBox.Show("Initial set up cancelled.", "Cancelled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+			await MessageBox.Show(window, "Initial set up cancelled.", "Cancelled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
 			Environment.Exit(0);
 		}
 

Source/LibationAvalonia/AvaloniaUtils.cs

@@ -4,6 +4,7 @@ using Avalonia.Markup.Xaml.MarkupExtensions;
 using Avalonia.Media.Imaging;
 using Avalonia.VisualTree;
 using LibationFileManager;
+using LibationUiBase.Forms;
 using System.Threading.Tasks;
 
 #nullable enable

Source/LibationAvalonia/Controls/DataGridCheckBoxColumnExt.cs

@@ -9,7 +9,7 @@ namespace LibationAvalonia.Controls
 		{
 			//Only SeriesEntry types have three-state checks, individual LibraryEntry books are binary.
 			var ele = base.GenerateEditingElementDirect(cell, dataItem) as CheckBox;
-			ele.IsThreeState = dataItem is ISeriesEntry;
+			ele.IsThreeState = dataItem is SeriesEntry;
 			return ele;
 		}
 	}

Source/LibationAvalonia/Controls/DataGridContextMenus.cs

@@ -34,11 +34,11 @@ namespace LibationAvalonia.Controls
 		private static void Cell_ContextRequested(object sender, ContextRequestedEventArgs e)
 		{
 			if (sender is DataGridCell cell &&
-				cell.DataContext is IGridEntry clickedEntry &&
+				cell.DataContext is GridEntry clickedEntry &&
 				OwningColumnProperty.GetValue(cell) is DataGridColumn column &&
 				OwningGridProperty.GetValue(column) is DataGrid grid)
 			{
-				var allSelected = grid.SelectedItems.OfType<IGridEntry>().ToArray();
+				var allSelected = grid.SelectedItems.OfType<GridEntry>().ToArray();
 				var clickedIndex = Array.IndexOf(allSelected, clickedEntry);
 				if (clickedIndex == -1)
 				{
@@ -101,7 +101,7 @@ namespace LibationAvalonia.Controls
 		private static string RemoveLineBreaks(string text)
 			=> text.Replace("\r\n", "").Replace('\r', ' ').Replace('\n', ' ');
 
-		private string GetRowClipboardContents(IGridEntry gridEntry)
+		private string GetRowClipboardContents(GridEntry gridEntry)
 		{
 			var contents = Grid.Columns.Where(c => c.IsVisible).OrderBy(c => c.DisplayIndex).Select(c => RemoveLineBreaks(GetCellValue(c, gridEntry))).ToArray();
 			return string.Join("\t", contents);
@@ -109,7 +109,7 @@ namespace LibationAvalonia.Controls
 
 		public required DataGrid Grid { get; init; }
 		public required DataGridColumn Column { get; init; }
-		public required IGridEntry[] GridEntries { get; init; }
+		public required GridEntry[] GridEntries { get; init; }
 		public required ContextMenu ContextMenu { get; init; }
 		public AvaloniaList<Control> ContextMenuItems
 			=> ContextMenu.ItemsSource as AvaloniaList<Control>;

Source/LibationAvalonia/Controls/DirectoryOrCustomSelectControl.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Platform.Storage;
 using Dinah.Core;
 using LibationFileManager;
 using ReactiveUI;
@@ -90,7 +91,7 @@ namespace LibationAvalonia.Controls
 
 			var selectedFolders = await (VisualRoot as Window).StorageProvider.OpenFolderPickerAsync(options);
 
-			directoryState.CustomDir = selectedFolders.SingleOrDefault()?.Path?.LocalPath ?? directoryState.CustomDir;
+			directoryState.CustomDir = selectedFolders.SingleOrDefault()?.TryGetLocalPath() ?? directoryState.CustomDir;
 		}
 
 		private void DirectoryOrCustomSelectControl_PropertyChanged(object sender, AvaloniaPropertyChangedEventArgs e)

Source/LibationAvalonia/Controls/LinkLabel.axaml.cs

@@ -92,13 +92,11 @@ namespace LibationAvalonia.Controls
 			base.UpdateDataValidation(property, state, error);
 			if (property == CommandProperty)
 			{
-				if (state == BindingValueType.BindingError)
+				var canExecure = !state.HasFlag(BindingValueType.HasError);
+				if (canExecure != _commandCanExecute)
 				{
-					if (_commandCanExecute)
-					{
-						_commandCanExecute = false;
-						UpdateIsEffectivelyEnabled();
-					}
+					_commandCanExecute = canExecure;
+					UpdateIsEffectivelyEnabled();
 				}
 			}
 		}

Source/LibationAvalonia/Controls/Settings/Audio.axaml.cs

@@ -4,6 +4,7 @@ using LibationAvalonia.Dialogs;
 using LibationAvalonia.ViewModels.Settings;
 using LibationFileManager;
 using LibationFileManager.Templates;
+using LibationUiBase.Forms;
 using System.Linq;
 using System.Threading.Tasks;
 

Source/LibationAvalonia/Controls/Settings/DownloadDecrypt.axaml.cs

@@ -3,6 +3,7 @@ using LibationAvalonia.Dialogs;
 using LibationAvalonia.ViewModels.Settings;
 using LibationFileManager;
 using LibationFileManager.Templates;
+using LibationUiBase.Forms;
 using System.Threading.Tasks;
 
 namespace LibationAvalonia.Controls.Settings

Source/LibationAvalonia/Controls/Settings/Important.axaml.cs

@@ -58,10 +58,5 @@ namespace LibationAvalonia.Controls.Settings
 			}
 			ThemeComboBox.SelectionChanged += ThemeComboBox_SelectionChanged;
 		}
-
-		public void OpenLogFolderButton_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
-		{
-			Go.To.Folder(((LongPath)Configuration.Instance.LibationFiles).ShortPathName);
-		}
 	}
 }

Source/LibationAvalonia/Controls/ThemePreviewControl.axaml.cs

@@ -1,12 +1,10 @@
 using Avalonia.Controls;
-using Avalonia.Media.Imaging;
 using DataLayer;
 using Dinah.Core.ErrorHandling;
 using LibationAvalonia.ViewModels;
 using LibationFileManager;
-using NPOI.Util.Collections;
+using LibationUiBase.ProcessQueue;
 using System.Collections.Generic;
-using System.ComponentModel;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -38,11 +36,11 @@ public partial class ThemePreviewControl : UserControl
 			PictureStorage.SetDefaultImage(PictureSize._80x80, ms1.ToArray());
 		}
 
-		QueuedBook = new ProcessBookViewModel(sampleEntries[0], null) { Status = ProcessBookStatus.Queued };
-		WorkingBook = new ProcessBookViewModel(sampleEntries[0], null) { Status = ProcessBookStatus.Working };
-		CompletedBook = new ProcessBookViewModel(sampleEntries[0], null) { Status = ProcessBookStatus.Completed };
-		CancelledBook = new ProcessBookViewModel(sampleEntries[0], null) { Status = ProcessBookStatus.Cancelled };
-		FailedBook = new ProcessBookViewModel(sampleEntries[0], null) { Status = ProcessBookStatus.Failed };
+		QueuedBook = new ProcessBookViewModel(sampleEntries[0]) { Status = ProcessBookStatus.Queued };
+		WorkingBook = new ProcessBookViewModel(sampleEntries[0]) { Status = ProcessBookStatus.Working };
+		CompletedBook = new ProcessBookViewModel(sampleEntries[0]) { Status = ProcessBookStatus.Completed };
+		CancelledBook = new ProcessBookViewModel(sampleEntries[0]) { Status = ProcessBookStatus.Cancelled };
+		FailedBook = new ProcessBookViewModel(sampleEntries[0]) { Status = ProcessBookStatus.Failed };
 
 		//Set the current processable so that the empty queue doesn't try to advance.
 		QueuedBook.AddDownloadPdf();

Source/LibationAvalonia/Dialogs/AboutDialog.axaml.cs

@@ -3,6 +3,7 @@ using LibationAvalonia.Controls;
 using LibationAvalonia.ViewModels;
 using LibationFileManager;
 using LibationUiBase;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.Collections.Generic;
@@ -60,7 +61,7 @@ namespace LibationAvalonia.Dialogs
 		private void Link_getlibation(object sender, Avalonia.Input.TappedEventArgs e) => Dinah.Core.Go.To.Url(AppScaffolding.LibationScaffolding.WebsiteUrl);
 
 		private void ViewReleaseNotes_Tapped(object sender, Avalonia.Input.TappedEventArgs e)
-			=> Dinah.Core.Go.To.Url($"{AppScaffolding.LibationScaffolding.RepositoryUrl}/releases/tag/v{AppScaffolding.LibationScaffolding.BuildVersion.ToString(3)}");
+			=> Dinah.Core.Go.To.Url($"{AppScaffolding.LibationScaffolding.RepositoryUrl}/releases/tag/v{AppScaffolding.LibationScaffolding.BuildVersion.ToVersionString()}");
 	}
 
 	public class AboutVM : ViewModelBase

Source/LibationAvalonia/Dialogs/AccountsDialog.axaml.cs

@@ -3,6 +3,7 @@ using AudibleUtilities;
 using Avalonia.Collections;
 using Avalonia.Controls;
 using Avalonia.Platform.Storage;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.Collections.Generic;

Source/LibationAvalonia/Dialogs/BookRecordsDialog.axaml.cs

@@ -7,6 +7,7 @@ using Avalonia.Platform.Storage;
 using Avalonia.Threading;
 using DataLayer;
 using FileLiberator;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.Collections.Generic;

Source/LibationAvalonia/Dialogs/DialogWindow.cs

@@ -3,6 +3,7 @@ using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
 using Avalonia.Styling;
 using LibationFileManager;
+using LibationUiBase.Forms;
 using System;
 using System.Threading.Tasks;
 

Source/LibationAvalonia/Dialogs/EditQuickFilters.axaml

@@ -24,9 +24,8 @@
 			CanUserSortColumns="False"
 			AutoGenerateColumns="False"
 			IsReadOnly="False"
-			ItemsSource="{Binding Filters}"
+			ItemsSource="{CompiledBinding Filters}"
 			GridLinesVisibility="All">
-
 			<DataGrid.Columns>
 
 				<DataGridTemplateColumn Header="Delete">
@@ -38,7 +37,7 @@
 								VerticalAlignment="Stretch"
 								HorizontalAlignment="Stretch"
 								HorizontalContentAlignment="Center"
-								IsEnabled="{Binding !IsDefault}"
+								IsEnabled="{CompiledBinding !IsDefault}"
 								Click="DeleteButton_Clicked" />
 
 						</DataTemplate>
@@ -48,14 +47,13 @@
 				<DataGridTextColumn
     				Width="*"
 				    IsReadOnly="False"
-				    Binding="{Binding Name, Mode=TwoWay}"
+				    Binding="{CompiledBinding Name, Mode=TwoWay}"
 				    Header="Name"/>
 
-
 				<DataGridTextColumn
 					Width="*"
 					IsReadOnly="False"
-					Binding="{Binding FilterString, Mode=TwoWay}"
+					Binding="{CompiledBinding FilterString, Mode=TwoWay}"
 					Header="Filter"/>
 
 				<DataGridTemplateColumn Header="Move&#xa;Up">
@@ -67,16 +65,19 @@
 								VerticalAlignment="Stretch"
 								HorizontalAlignment="Stretch"
 								HorizontalContentAlignment="Center"
-								IsEnabled="{Binding !IsDefault}"
-								ToolTip.Tip="Export account authorization to audible-cli"
-								Click="MoveUpButton_Clicked" />
+								Click="MoveUpButton_Clicked">
+								<Button.IsEnabled>
+									<MultiBinding Converter="{x:Static BoolConverters.And}">
+										<CompiledBinding Path="!IsTop" />
+										<CompiledBinding Path="!IsDefault" />
+									</MultiBinding>
+								</Button.IsEnabled>
+							</Button>
 
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
-
-
-
+				
 				<DataGridTemplateColumn Header="Move&#xa;Down">
 					<DataGridTemplateColumn.CellTemplate>
 						<DataTemplate>
@@ -86,15 +87,18 @@
 								VerticalAlignment="Stretch"
 								HorizontalAlignment="Stretch"
 								HorizontalContentAlignment="Center"
-								IsEnabled="{Binding !IsDefault}"
-								ToolTip.Tip="Export account authorization to audible-cli"
-								Click="MoveDownButton_Clicked" />
+								Click="MoveDownButton_Clicked">
+								<Button.IsEnabled>
+									<MultiBinding Converter="{x:Static BoolConverters.And}">
+										<CompiledBinding Path="!IsBottom" />
+										<CompiledBinding Path="!IsDefault" />
+									</MultiBinding>
+								</Button.IsEnabled>
+							</Button>
 
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
-
-
 			</DataGrid.Columns>
 		</DataGrid>
 		<Grid

Source/LibationAvalonia/Dialogs/EditQuickFilters.axaml.cs

@@ -1,15 +1,15 @@
 using AudibleUtilities;
+using Avalonia.Collections;
 using Avalonia.Controls;
 using LibationFileManager;
 using ReactiveUI;
-using System.Collections.ObjectModel;
 using System.Linq;
 
 namespace LibationAvalonia.Dialogs
 {
 	public partial class EditQuickFilters : DialogWindow
 	{
-		public ObservableCollection<Filter> Filters { get; } = new();
+		public AvaloniaList<Filter> Filters { get; } = new();
 
 		public class Filter : ViewModels.ViewModelBase
 		{ 
@@ -17,11 +17,8 @@ namespace LibationAvalonia.Dialogs
             public string Name
             {
                 get => _name;
-                set
-                {
-                    this.RaiseAndSetIfChanged(ref _name, value);
-                }
-            }
+                set => this.RaiseAndSetIfChanged(ref _name, value);
+			}
 
             private string _filterString;
 			public string FilterString
@@ -35,6 +32,10 @@ namespace LibationAvalonia.Dialogs
 				}
 			}
 			public bool IsDefault { get; private set; } = true;
+			private bool _isTop;
+			private bool _isBottom;
+			public bool IsTop { get => _isTop; set => this.RaiseAndSetIfChanged(ref _isTop, value); }
+			public bool IsBottom { get => _isBottom; set => this.RaiseAndSetIfChanged(ref _isBottom, value); }
 
 			public QuickFilters.NamedFilter AsNamedFilter() => new(FilterString, Name);
 
@@ -44,12 +45,12 @@ namespace LibationAvalonia.Dialogs
 			InitializeComponent();
 			if (Design.IsDesignMode)
 			{
-				Filters = new ObservableCollection<Filter>([
-					new Filter { Name = "Filter 1", FilterString = "[filter1 string]" },
+				Filters = [
+					new Filter { Name = "Filter 1", FilterString = "[filter1 string]", IsTop = true },
 					new Filter { Name = "Filter 2", FilterString = "[filter2 string]" },
 					new Filter { Name = "Filter 3", FilterString = "[filter3 string]" },
-					new Filter { Name = "Filter 4", FilterString = "[filter4 string]" }
-					]);
+					new Filter { Name = "Filter 4", FilterString = "[filter4 string]", IsBottom = true },
+					new Filter()];
 				DataContext = this;
 				return;
 			}
@@ -65,6 +66,8 @@ namespace LibationAvalonia.Dialogs
 			ControlToFocusOnShow = this.FindControl<Button>(nameof(saveBtn));
 
 			var allFilters = QuickFilters.Filters.Select(f => new Filter { FilterString = f.Filter, Name = f.Name }).ToList();
+			allFilters[0].IsTop = true;
+			allFilters[^1].IsBottom = true;
 			allFilters.Add(new Filter());
 
 			foreach (var f in allFilters)
@@ -81,6 +84,7 @@ namespace LibationAvalonia.Dialogs
 			var newBlank = new Filter();
 			newBlank.PropertyChanged += Filter_PropertyChanged;
 			Filters.Insert(Filters.Count, newBlank);
+			ReIndexFilters();
 		}
 
 		protected override void SaveAndClose()
@@ -98,30 +102,54 @@ namespace LibationAvalonia.Dialogs
 
 				filter.PropertyChanged -= Filter_PropertyChanged;
 				Filters.Remove(filter);
+				ReIndexFilters();
 			}
 		}
 
 		public void MoveUpButton_Clicked(object sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
-			if (e.Source is Button btn && btn.DataContext is Filter filter)
-			{
-				var index = Filters.IndexOf(filter);
-				if (index < 1) return;
+			if (e.Source is not Button btn || btn.DataContext is not Filter filter || filter.IsDefault)
+				return;
 
-				Filters.Remove(filter);
-				Filters.Insert(index - 1, filter);
-			}
+			var oldIndex = Filters.IndexOf(filter);
+			if (oldIndex < 1) return;
+
+			var filterCount = Filters.Count(f => !f.IsDefault);
+
+			MoveFilter(oldIndex, oldIndex - 1, filterCount);
 		}
 
 		public void MoveDownButton_Clicked(object sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
-			if (e.Source is Button btn && btn.DataContext is Filter filter)
-			{
-				var index = Filters.IndexOf(filter);
-				if (index >= Filters.Count - 2) return;
+			if (e.Source is not Button btn || btn.DataContext is not Filter filter || filter.IsDefault)
+				return;
 
-				Filters.Remove(filter);
-				Filters.Insert(index + 1, filter);
+			var filterCount = Filters.Count(f => !f.IsDefault);
+			var oldIndex = Filters.IndexOf(filter);
+			if (oldIndex >= filterCount - 1) return;
+
+			MoveFilter(oldIndex, oldIndex + 1, filterCount);
+		}
+
+		private void MoveFilter(int oldIndex, int newIndex, int filterCount)
+		{
+			var filter = Filters[oldIndex];
+			Filters.RemoveAt(oldIndex);
+			Filters.Insert(newIndex, filter);
+
+			Filters[oldIndex].IsTop = oldIndex == 0;
+			Filters[newIndex].IsTop = newIndex == 0;
+			Filters[newIndex].IsBottom = newIndex == filterCount - 1;
+			Filters[oldIndex].IsBottom = oldIndex == filterCount - 1;
+		}
+
+		private void ReIndexFilters()
+		{
+			var filterCount = Filters.Count(f => !f.IsDefault);
+			for (int i = filterCount - 1; i >= 0; i--)
+			{
+				Filters[i].IsTop = i == 0;
+				Filters[i].IsBottom = i == filterCount - 1;
 			}
 		}
 	}

Source/LibationAvalonia/Dialogs/EditReplacementChars.axaml

@@ -6,6 +6,8 @@
 		MinWidth="500" MinHeight="450"
 		Width="500" Height="450"
         x:Class="LibationAvalonia.Dialogs.EditReplacementChars"
+		xmlns:dialogs="clr-namespace:LibationAvalonia.Dialogs"
+		x:DataType="dialogs:EditReplacementChars"
         Title="Illegal Character Replacement">
 
 	<Grid
@@ -23,31 +25,30 @@
 			BeginningEdit="ReplacementGrid_BeginningEdit"
 			CellEditEnding="ReplacementGrid_CellEditEnding"
 			KeyDown="ReplacementGrid_KeyDown"
-			ItemsSource="{Binding replacements}">
+			ItemsSource="{CompiledBinding replacements}">
 
 			<DataGrid.Columns>
 
-
 				<DataGridTemplateColumn Header="Char to&#xa;Replace">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
-							<TextBox IsReadOnly="{Binding Mandatory}" Text="{Binding CharacterToReplace, Mode=TwoWay}" />
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
+							<TextBox IsReadOnly="{CompiledBinding Mandatory}" Text="{CompiledBinding CharacterToReplace, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
 				
 				<DataGridTemplateColumn Header="Replacement&#xa;Text">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
-							<TextBox Text="{Binding ReplacementText, Mode=TwoWay}" />
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
+							<TextBox Text="{CompiledBinding ReplacementText, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
 
 				<DataGridTemplateColumn Width="*" Header="Description">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
-							<TextBox IsReadOnly="{Binding Mandatory}" Text="{Binding Description, Mode=TwoWay}" />
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
+							<TextBox IsReadOnly="{CompiledBinding Mandatory}" Text="{CompiledBinding Description, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
@@ -55,21 +56,31 @@
 			</DataGrid.Columns>
 		</DataGrid>
 
-		<StackPanel
+		<Grid
 			Grid.Row="1"
 			Grid.Column="0"
+			RowDefinitions="Auto,Auto"
 			Margin="5"
-			Orientation="Horizontal">
-			
-			<Button Margin="0,0,10,0" Command="{Binding Defaults}" Content="Defaults" />
-			<Button Margin="0,0,10,0" Command="{Binding LoFiDefaults}" Content="LoFi Defaults" />
-			<Button Command="{Binding Barebones}" Content="Barebones" />
-		</StackPanel>
+			ColumnDefinitions="Auto,Auto,Auto,Auto">
+
+			<TextBlock IsVisible="{CompiledBinding !EnvironmentIsWindows}" Text="This System:" Margin="0,0,10,0" VerticalAlignment="Center" />
+			<TextBlock IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Text="NTFS:" Margin="0,0,10,0" VerticalAlignment="Center" />
+
+			<Button Grid.Column="1" Margin="0,0,10,0" Command="{CompiledBinding Defaults}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="Defaults" />
+			<Button Grid.Column="2" Margin="0,0,10,0" Command="{CompiledBinding LoFiDefaults}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="LoFi Defaults" />
+			<Button Grid.Column="3" Command="{CompiledBinding Barebones}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="Barebones" />
+
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="1" Margin="0,10,10,0" Command="{CompiledBinding Defaults}" CommandParameter="True" Content="Defaults" />
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="2" Margin="0,10,10,0" Command="{CompiledBinding LoFiDefaults}" CommandParameter="True" Content="LoFi Defaults" />
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="3" Margin="0,10,0,0" Command="{CompiledBinding Barebones}" CommandParameter="True" Content="Barebones" />
+
+		</Grid>
 
 		<StackPanel
 			Grid.Row="1"
 			Grid.Column="1"
 			Margin="5"
+			VerticalAlignment="Bottom"
 			Orientation="Horizontal">
 
 			<Button Margin="0,0,10,0" Command="{Binding Close}" Content="Cancel" />

Source/LibationAvalonia/Dialogs/EditReplacementChars.axaml.cs

@@ -13,6 +13,8 @@ namespace LibationAvalonia.Dialogs
 	{
 		Configuration config;
 
+		public bool EnvironmentIsWindows => Configuration.IsWindows;
+
 		private readonly List<ReplacementsExt> SOURCE = new();
 		public DataGridCollectionView replacements { get; }
 		public EditReplacementChars()
@@ -23,7 +25,7 @@ namespace LibationAvalonia.Dialogs
 
 			if (Design.IsDesignMode)
 			{
-				LoadTable(ReplacementCharacters.Default.Replacements);
+				LoadTable(ReplacementCharacters.Default(true).Replacements);
 			}
 
 			DataContext = this;
@@ -35,12 +37,12 @@ namespace LibationAvalonia.Dialogs
 			LoadTable(config.ReplacementCharacters.Replacements);
 		}
 
-		public void Defaults()
-			=> LoadTable(ReplacementCharacters.Default.Replacements);
-		public void LoFiDefaults()
-			=> LoadTable(ReplacementCharacters.LoFiDefault.Replacements);
-		public void Barebones()
-			=> LoadTable(ReplacementCharacters.Barebones.Replacements);
+		public void Defaults(bool isNtfs)
+			=> LoadTable(ReplacementCharacters.Default(isNtfs).Replacements);
+		public void LoFiDefaults(bool isNtfs)
+			=> LoadTable(ReplacementCharacters.LoFiDefault(isNtfs).Replacements);
+		public void Barebones(bool isNtfs)
+			=> LoadTable(ReplacementCharacters.Barebones(isNtfs).Replacements);
 
 		protected override void SaveAndClose()
 		{

Source/LibationAvalonia/Dialogs/EditTemplateDialog.axaml

@@ -6,24 +6,28 @@
 		Width="800" Height="450"
         x:Class="LibationAvalonia.Dialogs.EditTemplateDialog"
 		xmlns:dialogs="clr-namespace:LibationAvalonia.Dialogs"
+		xmlns:controls="clr-namespace:LibationAvalonia.Controls"
+		x:DataType="dialogs:EditTemplateDialog+EditTemplateViewModel"
         Title="EditTemplateDialog">
 
-	<Grid RowDefinitions="Auto,*,Auto">
+	<Grid RowDefinitions="Auto,*,Auto" Margin="10">
 		<Grid
 			Grid.Row="0"
 			RowDefinitions="Auto,Auto"
-			ColumnDefinitions="*,Auto" Margin="5">
+			ColumnDefinitions="*,Auto"
+			Margin="0,0,0,10">
 
 			<TextBlock
 				Grid.Column="0"
 				Grid.Row="0"
-				Text="{Binding Description}" />
+				Margin="0,0,0,10"
+				Text="{CompiledBinding Description}" />
 
 			<TextBox
 				Grid.Column="0"
 				Grid.Row="1"
 				Name="userEditTbox"
-				Text="{Binding UserTemplateText, Mode=TwoWay}" />
+				Text="{CompiledBinding UserTemplateText, Mode=TwoWay}" />
 
 			<Button
 				Grid.Column="1"
@@ -32,9 +36,10 @@
 				VerticalAlignment="Stretch"
 				VerticalContentAlignment="Center"
 				Content="Reset to Default"
-				Command="{Binding ResetToDefault}"/>
+				Command="{CompiledBinding ResetToDefault}"/>
 		</Grid>
-		<Grid Grid.Row="1" ColumnDefinitions="Auto,*">
+		<Grid Grid.Row="1" ColumnDefinitions="Auto,*"
+			  Margin="0,0,0,10">
 
 				<DataGrid
 					Grid.Row="0"
@@ -44,13 +49,13 @@
 					GridLinesVisibility="All"
 					AutoGenerateColumns="False"
 					DoubleTapped="EditTemplateViewModel_DoubleTapped"
-					ItemsSource="{Binding ListItems}" >
+					ItemsSource="{CompiledBinding ListItems}" >
 
 					<DataGrid.Columns>
 						<DataGridTemplateColumn Width="Auto" Header="Tag">
 							<DataGridTemplateColumn.CellTemplate>
 								<DataTemplate>
-									<TextBlock Height="18" Margin="10,0,10,0" VerticalAlignment="Center" Text="{Binding Item1}" />
+									<TextBlock Height="18" Margin="10,0,10,0" VerticalAlignment="Center" Text="{CompiledBinding Item1}" />
 								</DataTemplate>
 							</DataGridTemplateColumn.CellTemplate>
 						</DataGridTemplateColumn>
@@ -61,7 +66,7 @@
 									<TextBlock
 										Height="18"
 										Margin="10,0,10,0"
-										VerticalAlignment="Center" Text="{Binding Item2}" />
+										VerticalAlignment="Center" Text="{CompiledBinding Item2}" />
 								</DataTemplate>
 							</DataGridTemplateColumn.CellTemplate>
 						</DataGridTemplateColumn>
@@ -71,23 +76,22 @@
 			
 			<Grid
 			Grid.Column="1"
-			Margin="5,0,5,0"
+			Margin="10,0,0,0"
 			RowDefinitions="Auto,*,Auto"
 			HorizontalAlignment="Stretch">
 
 				<TextBlock
-					Margin="5,5,5,10"
+					Margin="0,0,0,5"
 					Text="Example:"/>
 				
 				<Border
 					Grid.Row="1"
-					Margin="5"
 					BorderThickness="1"
 					BorderBrush="{DynamicResource DataGridGridLinesBrush}">
 					
 					<TextBlock
 						TextWrapping="WrapWithOverflow"
-						Inlines="{Binding Inlines}" />
+						Inlines="{CompiledBinding Inlines}" />
 
 				</Border>
 
@@ -95,13 +99,17 @@
 					Grid.Row="2"
 					Margin="5"
 					Foreground="Firebrick"
-					Text="{Binding WarningText}"
-					IsVisible="{Binding WarningText, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+					Text="{CompiledBinding WarningText}"
+					IsVisible="{CompiledBinding WarningText, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
 			</Grid>
 		</Grid>
+		<controls:LinkLabel
+			Grid.Row="2"
+			VerticalAlignment="Center"
+			Text="Read about naming templates on the Wiki"
+			Command="{Binding GoToNamingTemplateWiki}" />
 		<Button
 			Grid.Row="2"
-			Margin="5"
 			Padding="30,5,30,5"
 			HorizontalAlignment="Right"
 			Content="Save"

Source/LibationAvalonia/Dialogs/EditTemplateDialog.axaml.cs

@@ -6,6 +6,7 @@ using Avalonia.Styling;
 using Dinah.Core;
 using LibationFileManager;
 using LibationFileManager.Templates;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.IO;
@@ -69,7 +70,7 @@ public partial class EditTemplateDialog : DialogWindow
 	public async void SaveButton_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
 		=> await SaveAndCloseAsync();
 
-	private class EditTemplateViewModel : ViewModels.ViewModelBase
+	internal class EditTemplateViewModel : ViewModels.ViewModelBase
 	{
 		private readonly Configuration config;
 		public InlineCollection Inlines { get; } = new();
@@ -95,6 +96,9 @@ public partial class EditTemplateDialog : DialogWindow
 
 		}
 
+		public void GoToNamingTemplateWiki()
+			=> Go.To.Url(@"ht" + "tps://github.com/rmcrackan/Libation/blob/master/Documentation/NamingTemplates.md");
+
 		// hold the work-in-progress value. not guaranteed to be valid
 		private string _userTemplateText;
 		public string UserTemplateText

Source/LibationAvalonia/Dialogs/ImageDisplayDialog.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia.Media.Imaging;
 using Avalonia.Platform.Storage;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.ComponentModel;

Source/LibationAvalonia/Dialogs/LibationFilesDialog.axaml.cs

@@ -1,4 +1,5 @@
 using LibationFileManager;
+using LibationUiBase.Forms;
 using System.Collections.Generic;
 
 namespace LibationAvalonia.Dialogs

Source/LibationAvalonia/Dialogs/LocateAudiobooksDialog.axaml.cs

@@ -13,11 +13,12 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace LibationAvalonia.Dialogs
 {
 	public partial class LocateAudiobooksDialog : DialogWindow
 	{
-		private event EventHandler<FilePathCache.CacheEntry> FileFound;
+		private event EventHandler<FilePathCache.CacheEntry>? FileFound;
 		private readonly CancellationTokenSource tokenSource = new();
 		private readonly List<string> foundAsins = new();
 		private readonly LocatedAudiobooksViewModel _viewModel;
@@ -41,7 +42,7 @@ namespace LibationAvalonia.Dialogs
 			}
 		}
 
-		private void LocateAudiobooksDialog_Closing(object sender, System.ComponentModel.CancelEventArgs e)
+		private void LocateAudiobooksDialog_Closing(object? sender, System.ComponentModel.CancelEventArgs e)
 		{
 			tokenSource.Cancel();
 			//If this dialog is closed before it's completed, Closing is fired
@@ -50,7 +51,7 @@ namespace LibationAvalonia.Dialogs
 			this.SaveSizeAndLocation(Configuration.Instance);
 		}
 
-		private void LocateAudiobooks_FileFound(object sender, FilePathCache.CacheEntry e)
+		private void LocateAudiobooks_FileFound(object? sender, FilePathCache.CacheEntry e)
 		{
 			var newItem = new Tuple<string, string>($"[{e.Id}]", Path.GetFileName(e.Path));
 			_viewModel.FoundFiles.Add(newItem);
@@ -63,13 +64,13 @@ namespace LibationAvalonia.Dialogs
 			}
 		}
 
-		private async void LocateAudiobooksDialog_Opened(object sender, EventArgs e)
+		private async void LocateAudiobooksDialog_Opened(object? sender, EventArgs e)
 		{
 			var folderPicker = new FolderPickerOpenOptions
 			{
 				Title = "Select the folder to search for audiobooks",
 				AllowMultiple = false,
-				SuggestedStartLocation = await StorageProvider.TryGetFolderFromPathAsync(Configuration.Instance.Books.PathWithoutPrefix)
+				SuggestedStartLocation = await StorageProvider.TryGetFolderFromPathAsync(Configuration.Instance.Books?.PathWithoutPrefix ?? "")
 			};
 
 			var selectedFolder = (await StorageProvider.OpenFolderPickerAsync(folderPicker))?.SingleOrDefault()?.TryGetLocalPath();
@@ -89,11 +90,13 @@ namespace LibationAvalonia.Dialogs
 					FilePathCache.Insert(book);
 
 					var lb = context.GetLibraryBook_Flat_NoTracking(book.Id);
-					if (lb?.Book?.UserDefinedItem.BookStatus is not LiberatedStatus.Liberated)
+					if (lb is not null && lb.Book?.UserDefinedItem.BookStatus is not LiberatedStatus.Liberated)
 						await Task.Run(() => lb.UpdateBookStatus(LiberatedStatus.Liberated));
 
+					tokenSource.Token.ThrowIfCancellationRequested();
 					FileFound?.Invoke(this, book);
 				}
+				catch (OperationCanceledException) { }
 				catch (Exception ex)
 				{
 					Serilog.Log.Error(ex, "Error adding found audiobook file to Libation. {@audioFile}", book);

Source/LibationAvalonia/Dialogs/Login/AvaloniaLoginCallback.cs

@@ -1,5 +1,7 @@
 using AudibleApi;
 using AudibleUtilities;
+using Avalonia.Threading;
+using LibationUiBase.Forms;
 using System.Threading.Tasks;
 
 namespace LibationAvalonia.Dialogs.Login
@@ -16,42 +18,46 @@ namespace LibationAvalonia.Dialogs.Login
 		}
 
 		public async Task<string> Get2faCodeAsync(string prompt)
-		{
-			var dialog = new _2faCodeDialog(prompt);
-			if (await dialog.ShowDialogAsync() is DialogResult.OK)
-				return dialog.Code;
-
-			return null;
-		}
+			=> await Dispatcher.UIThread.InvokeAsync(async () =>
+			{
+				var dialog = new _2faCodeDialog(prompt);
+				if (await dialog.ShowDialogAsync() is DialogResult.OK)
+					return dialog.Code;
+				return null;
+			});
 
 		public async Task<(string password, string guess)> GetCaptchaAnswerAsync(string password, byte[] captchaImage)
-		{
-			var dialog = new CaptchaDialog(password, captchaImage);
-			if (await dialog.ShowDialogAsync() is DialogResult.OK)
-				return (dialog.Password, dialog.Answer);
-			return (null, null);
-		}
+			=> await Dispatcher.UIThread.InvokeAsync(async () =>
+			{
+				var dialog = new CaptchaDialog(password, captchaImage);
+				if (await dialog.ShowDialogAsync() is DialogResult.OK)
+					return (dialog.Password, dialog.Answer);
+				return (null, null);
+			});
 
 		public async Task<(string name, string value)> GetMfaChoiceAsync(MfaConfig mfaConfig)
-		{
-			var dialog = new MfaDialog(mfaConfig);
-			if (await dialog.ShowDialogAsync() is DialogResult.OK)
-				return (dialog.SelectedName, dialog.SelectedValue);
-			return (null, null);
-		}
+			=> await Dispatcher.UIThread.InvokeAsync(async () =>
+			{
+				var dialog = new MfaDialog(mfaConfig);
+				if (await dialog.ShowDialogAsync() is DialogResult.OK)
+					return (dialog.SelectedName, dialog.SelectedValue);
+				return (null, null);
+			});
 
 		public async Task<(string email, string password)> GetLoginAsync()
-		{
-			var dialog = new LoginCallbackDialog(_account);
-			if (await dialog.ShowDialogAsync() is DialogResult.OK)
-				return (_account.AccountId, dialog.Password);
-			return (null, null);
-		}
+			=> await Dispatcher.UIThread.InvokeAsync(async () =>
+			{
+				var dialog = new LoginCallbackDialog(_account);
+				if (await dialog.ShowDialogAsync() is DialogResult.OK)
+					return (_account.AccountId, dialog.Password);
+				return (null, null);
+			});
 
 		public async Task ShowApprovalNeededAsync()
-		{
-			var dialog = new ApprovalNeededDialog();
-			await dialog.ShowDialogAsync();
-		}
+			=> await Dispatcher.UIThread.InvokeAsync(async () =>
+			{
+				var dialog = new ApprovalNeededDialog();
+				await dialog.ShowDialogAsync();
+			});
 	}
 }

Source/LibationAvalonia/Dialogs/Login/AvaloniaLoginChoiceEager.cs

@@ -1,6 +1,8 @@
 using AudibleApi;
 using AudibleUtilities;
+using Avalonia.Threading;
 using LibationFileManager;
+using LibationUiBase.Forms;
 using System;
 using System.Threading.Tasks;
 
@@ -20,6 +22,9 @@ namespace LibationAvalonia.Dialogs.Login
 		}
 
 		public async Task<ChoiceOut?> StartAsync(ChoiceIn choiceIn)
+			=> await Dispatcher.UIThread.InvokeAsync(() => StartAsyncInternal(choiceIn));
+
+		private async Task<ChoiceOut?> StartAsyncInternal(ChoiceIn choiceIn)
 		{
 			if (Configuration.IsWindows && Environment.OSVersion.Version.Major >= 10)
 			{

Source/LibationAvalonia/Dialogs/Login/MfaDialog.axaml.cs

@@ -1,6 +1,7 @@
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Data;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System.Collections.Generic;
 using System.Linq;

Source/LibationAvalonia/Dialogs/Login/WebLoginDialog.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia.Controls;
 using Dinah.Core;
+using LibationUiBase.Forms;
 using System;
 
 namespace LibationAvalonia.Dialogs.Login

Source/LibationAvalonia/Dialogs/MessageBoxAlertAdminDialog.axaml.cs

@@ -1,6 +1,7 @@
 using Avalonia.Controls;
 using Dinah.Core;
 using FileManager;
+using LibationUiBase.Forms;
 using System;
 
 namespace LibationAvalonia.Dialogs

Source/LibationAvalonia/Dialogs/MessageBoxWindow.axaml

@@ -1,12 +1,13 @@
 <Window xmlns="https://github.com/avaloniaui"
 		xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 		xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-		xmlns:vm="clr-namespace:LibationAvalonia.ViewModels"
+		xmlns:vm="clr-namespace:LibationAvalonia.ViewModels.Dialogs"
 		xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         mc:Ignorable="d" d:DesignWidth="265" d:DesignHeight="110"
 		MinWidth="265" MinHeight="110"
+		x:DataType="vm:MessageBoxViewModel"
         x:Class="LibationAvalonia.Dialogs.MessageBoxWindow"
-        Title="{Binding Caption}" ShowInTaskbar="True">
+        Title="{CompiledBinding Caption}" ShowInTaskbar="True">
 	
 	<Grid ColumnDefinitions="*" RowDefinitions="*,Auto">
 		
@@ -14,14 +15,22 @@
 			<StackPanel DockPanel.Dock="Top" Orientation="Horizontal"
 				VerticalAlignment="Top">
 			
-				<Panel Height="32" Width="32" Grid.Column="0" Margin="5,0,5,0" VerticalAlignment="Top">				
-					<Image IsVisible="{Binding IsAsterisk}" Stretch="Uniform" Source="/Assets/MBIcons/Asterisk_64.png"/>
-					<Image IsVisible="{Binding IsError}" Stretch="Uniform" Source="/Assets/MBIcons/Error_64.png"/>
-					<Image IsVisible="{Binding IsQuestion}" Stretch="Uniform" Source="/Assets/MBIcons/Question_64.png"/>
-					<Image IsVisible="{Binding IsExclamation}" Stretch="Uniform" Source="/Assets/MBIcons/Exclamation_64.png"/>
+				<Panel Height="32" Width="32" Grid.Column="0" Margin="5,0,5,0" VerticalAlignment="Top">
+					<Panel.IsVisible>
+						<MultiBinding Converter="{x:Static BoolConverters.Or}">
+							<CompiledBinding Path="IsAsterisk" />
+							<CompiledBinding Path="IsError" />
+							<CompiledBinding Path="IsQuestion" />
+							<CompiledBinding Path="IsExclamation" />
+						</MultiBinding>
+					</Panel.IsVisible>
+					<Image IsVisible="{CompiledBinding IsAsterisk}" Stretch="Uniform" Source="/Assets/MBIcons/Asterisk_64.png"/>
+					<Image IsVisible="{CompiledBinding IsError}" Stretch="Uniform" Source="/Assets/MBIcons/Error_64.png"/>
+					<Image IsVisible="{CompiledBinding IsQuestion}" Stretch="Uniform" Source="/Assets/MBIcons/Question_64.png"/>
+					<Image IsVisible="{CompiledBinding IsExclamation}" Stretch="Uniform" Source="/Assets/MBIcons/Exclamation_64.png"/>
 				</Panel>
 			
-				<TextBlock Margin="5,0,0,0" Name="messageTextBlock" MinHeight="45" MinWidth="193" TextWrapping="WrapWithOverflow" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="12" Text="{Binding Message}" />
+				<TextBlock Margin="5,0,0,0" Name="messageTextBlock" MinHeight="45" MinWidth="193" TextWrapping="WrapWithOverflow" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="12" Text="{CompiledBinding Message}" />
 
 			</StackPanel>
 		</DockPanel>
@@ -35,13 +44,13 @@
 			</DockPanel.Styles>
 			<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="5" DockPanel.Dock="Bottom">
 				<Button Grid.Column="0" MinWidth="75" MinHeight="28" Name="Button1" Click="Button1_Click" Margin="5">
-					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{Binding Button1Text}"/>
+					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{CompiledBinding Button1Text}"/>
 				</Button>
-				<Button Grid.Column="1" IsVisible="{Binding HasButton2}" MinWidth="75" MinHeight="28" Name="Button2" Click="Button2_Click" Margin="5">
-					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{Binding Button2Text}"/>
+				<Button Grid.Column="1" IsVisible="{CompiledBinding HasButton2}" MinWidth="75" MinHeight="28" Name="Button2" Click="Button2_Click" Margin="5">
+					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{CompiledBinding Button2Text}"/>
 				</Button>
-				<Button Grid.Column="2" IsVisible="{Binding HasButton3}" MinWidth="75" MinHeight="28" Name="Button3" Click="Button3_Click" Margin="5">
-					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{Binding Button3Text}"/>
+				<Button Grid.Column="2" IsVisible="{CompiledBinding HasButton3}" MinWidth="75" MinHeight="28" Name="Button3" Click="Button3_Click" Margin="5">
+					<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Text="{CompiledBinding Button3Text}"/>
 				</Button>
 			</StackPanel>
 		</DockPanel>

Source/LibationAvalonia/Dialogs/MessageBoxWindow.axaml.cs

@@ -1,4 +1,5 @@
 using LibationAvalonia.ViewModels.Dialogs;
+using LibationUiBase.Forms;
 
 namespace LibationAvalonia.Dialogs
 {

Source/LibationAvalonia/Dialogs/ScanAccountsDialog.axaml.cs

@@ -1,6 +1,6 @@
 using AudibleUtilities;
 using Avalonia.Controls;
-using Avalonia.Interactivity;
+using LibationUiBase.Forms;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;

Source/LibationAvalonia/Dialogs/SearchSyntaxDialog.axaml

@@ -2,71 +2,73 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="650"
-		MinWidth="800" MinHeight="650"
-		MaxWidth="800" MaxHeight="650"
+		xmlns:dialogs="clr-namespace:LibationAvalonia.Dialogs"
+		x:DataType="dialogs:SearchSyntaxDialog"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="50"
+		MinWidth="500" MinHeight="650"
 		Width="800" Height="650"
         x:Class="LibationAvalonia.Dialogs.SearchSyntaxDialog"
         Title="Filter Options"
 		WindowStartupLocation="CenterOwner">
-
+	
 	<Grid
-		Margin="10,0,10,10"
-		RowDefinitions="Auto,Auto,*"
-		ColumnDefinitions="Auto,Auto,Auto,Auto">
+		RowDefinitions="Auto,*"
+		ColumnDefinitions="*,*,*,*">
 
 		<Grid.Styles>
+			<Style Selector="Grid > Grid">
+				<Setter Property="Margin" Value="10,0" />
+			</Style>
+			<Style Selector="Grid > TextBlock">
+				<Setter Property="TextWrapping" Value="Wrap" />
+			</Style>
 			<Style Selector="TextBlock">
 				<Setter Property="FontSize" Value="12" />
-				<Setter Property="Margin" Value="10" />
+				<Setter Property="Margin" Value="0,5" />
+			</Style>
+			<Style Selector="ListBox">
+				<Setter Property="Margin" Value="0,5,0,10"/>
+				<Style Selector="^ > ListBoxItem">
+					<Setter Property="Padding" Value="0"/>
+					<Style Selector="^ TextBlock">
+						<Setter Property="Margin" Value="8,1"/>
+					</Style>
+				</Style>
 			</Style>
 		</Grid.Styles>
 
-	    <TextBlock
-			Grid.Row="0"
-			Grid.Column="0"
+		<Grid
 			Grid.ColumnSpan="4"
-			Text="Full Lucene query syntax is supported&#xa;Fields with similar names are synomyns (eg: Author, Authors, AuthorNames)&#xa;&#xa;TAG FORMAT: [tagName]" />
-		
-	    <TextBlock
-			Grid.Row="1"
-			Grid.Column="0"
-			Text="STRING FIELDS" />
-		
-	    <TextBlock
-			Grid.Row="1"
-			Grid.Column="1"
-			Text="NUMBER FIELDS" />		
-		
-	    <TextBlock
-			Grid.Row="1"
-			Grid.Column="2"
-			Text="BOOLEAN (TRUE/FALSE) FIELDS" />		
-		
-	    <TextBlock
-			Grid.Row="1"
-			Grid.Column="3"
-			Text="ID FIELDS" />
-		
-	    <TextBlock
-			Grid.Row="2"
-			Grid.Column="0"
-			Text="{Binding StringFields}" />
-		
-	    <TextBlock
-			Grid.Row="2"
-			Grid.Column="1"
-			Text="{Binding NumberFields}" />		
-		
-	    <TextBlock
-			Grid.Row="2"
-			Grid.Column="2"
-			Text="{Binding BoolFields}" />		
-		
-	    <TextBlock
-			Grid.Row="2"
-			Grid.Column="3"
-			Text="{Binding IdFields}" />
-		
+			RowDefinitions="Auto,Auto">
+
+			<TextBlock
+				Text="Full Lucene query syntax is supported&#xa;Fields with similar names are synomyns (eg: Author, Authors, AuthorNames)" />
+
+			<TextBlock Grid.Row="1" Text="TAG FORMAT: [tagName]" />
+		</Grid>
+
+		<Grid Grid.Row="1" RowDefinitions="Auto,Auto,*">
+			<TextBlock Text="NUMBER FIELDS" />
+			<TextBlock Grid.Row="1" Text="{CompiledBinding StringUsage}" />
+			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding StringFields}"/>
+		</Grid>
+
+		<Grid Grid.Row="1" Grid.Column="1" RowDefinitions="Auto,Auto,*">
+			<TextBlock Text="STRING FIELDS" />
+			<TextBlock Grid.Row="1" Text="{CompiledBinding NumberUsage}" />
+			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding NumberFields}"/>
+		</Grid>
+
+		<Grid Grid.Row="1" Grid.Column="2" RowDefinitions="Auto,Auto,*">
+			<TextBlock Text="BOOLEAN (TRUE/FALSE) FIELDS" />
+			<TextBlock Grid.Row="1" Text="{CompiledBinding BoolUsage}" />
+			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding BoolFields}"/>
+		</Grid>
+
+		<Grid Grid.Row="1" Grid.Column="3" RowDefinitions="Auto,Auto,*">
+			<TextBlock Text="ID FIELDS" />
+			<TextBlock Grid.Row="1" Text="{CompiledBinding IdUsage}" />
+			<ListBox Grid.Row="2" ItemsSource="{CompiledBinding IdFields}"/>
+		</Grid>		
 	</Grid>
 </Window>

Source/LibationAvalonia/Dialogs/SearchSyntaxDialog.axaml.cs

@@ -1,59 +1,55 @@
 using LibationSearchEngine;
+using System.Linq;
 
 namespace LibationAvalonia.Dialogs
 {
 	public partial class SearchSyntaxDialog : DialogWindow
 	{
-		public string StringFields { get; init; }
-		public string NumberFields { get; init; }
-		public string BoolFields { get; init; }
-		public string IdFields { get; init; }
+		public string StringUsage { get; }
+		public string NumberUsage { get; }
+		public string BoolUsage { get; }
+		public string IdUsage { get; }
+		public string[] StringFields { get; } = SearchEngine.FieldIndexRules.StringFieldNames.ToArray();
+		public string[] NumberFields { get; } = SearchEngine.FieldIndexRules.NumberFieldNames.ToArray();
+		public string[] BoolFields { get; } = SearchEngine.FieldIndexRules.BoolFieldNames.ToArray();
+		public string[] IdFields { get; } = SearchEngine.FieldIndexRules.IdFieldNames.ToArray();
+
 		public SearchSyntaxDialog()
 		{
 			InitializeComponent();
 
-			StringFields = @"
-Search for wizard of oz:
-     title:oz
-     title:""wizard of oz""
+			StringUsage = """
+			Search for wizard of oz:
+				 title:oz
+				 title:"wizard of oz"
+			""";
 
+			NumberUsage = """
+			Find books between 1-100 minutes long
+				 length:[1 TO 100]
+			Find books exactly 1 hr long
+				 length:60
+			Find books published from 2020-1-1 to
+			2023-12-31
+				 datepublished:[20200101 TO 20231231]
+			""";
 
-" + string.Join("\r\n", SearchEngine.FieldIndexRules.StringFieldNames);
+			BoolUsage = """
+			Find books that you haven't rated:
+				 -IsRated
+			""";
 
-			NumberFields = @"
-Find books between 1-100 minutes long
-     length:[1 TO 100]
-Find books exactly 1 hr long
-     length:60
-Find books published from 2020-1-1 to
-2023-12-31
-     datepublished:[20200101 TO 20231231]
+			IdUsage = """
+			Alice's Adventures in
+			  Wonderland (ID: B015D78L0U)
 
+				 id:B015D78L0U
 
-" + string.Join("\r\n", SearchEngine.FieldIndexRules.NumberFieldNames);
-
-			BoolFields = @"
-Find books that you haven't rated:
-     -IsRated
-
-
-" + string.Join("\r\n", SearchEngine.FieldIndexRules.BoolFieldNames);
-
-			IdFields = @"
-Alice's Adventures in
-  Wonderland (ID: B015D78L0U)
-
-     id:B015D78L0U
-
-All of these are synonyms
-for the ID field
-
-
-" + string.Join("\r\n", SearchEngine.FieldIndexRules.IdFieldNames);
-
+			All of these are synonyms
+			for the ID field
+			""";
 
 			DataContext = this;
-
 		}
 	}
 }

Source/LibationAvalonia/Dialogs/SettingsDialog.axaml.cs

@@ -1,6 +1,9 @@
 using Avalonia.Controls;
+using FileManager;
 using LibationAvalonia.ViewModels.Settings;
 using LibationFileManager;
+using LibationUiBase.Forms;
+using System;
 using System.Threading.Tasks;
 
 namespace LibationAvalonia.Dialogs
@@ -38,6 +41,21 @@ namespace LibationAvalonia.Dialogs
 		}
 
 		public async void SaveButton_Clicked(object sender, Avalonia.Interactivity.RoutedEventArgs e)
-			=> await SaveAndCloseAsync();
+		{
+			LongPath lonNewBooks = settingsDisp.ImportantSettings.GetBooksDirectory();
+			if (!System.IO.Directory.Exists(lonNewBooks))
+			{
+				try
+				{
+					System.IO.Directory.CreateDirectory(lonNewBooks);
+				}
+				catch (Exception ex)
+				{
+					await MessageBox.Show(this, $"Error creating Books Location:\n\n{ex.Message}", "Error creating directory", MessageBoxButtons.OK, MessageBoxIcon.Error);
+					return;
+				}
+			}
+			await SaveAndCloseAsync();
+		}
 	}
 }

Source/LibationAvalonia/Dialogs/SetupDialog.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia.Controls;
 using LibationFileManager;
+using LibationUiBase.Forms;
 
 namespace LibationAvalonia.Dialogs
 {

Source/LibationAvalonia/Dialogs/ThemePickerDialog.axaml.cs

@@ -8,6 +8,7 @@ using System.Threading.Tasks;
 using System.Collections.Generic;
 using System.Linq;
 using Avalonia.Platform.Storage;
+using LibationUiBase.Forms;
 
 #nullable enable
 namespace LibationAvalonia.Dialogs;

Source/LibationAvalonia/Dialogs/UpgradeNotificationDialog.axaml.cs

@@ -1,6 +1,8 @@
 using AppScaffolding;
 using Avalonia.Controls;
 using Dinah.Core;
+using LibationFileManager;
+using LibationUiBase.Forms;
 
 namespace LibationAvalonia.Dialogs
 {
@@ -29,7 +31,7 @@ namespace LibationAvalonia.Dialogs
 
 		public UpgradeNotificationDialog(UpgradeProperties upgradeProperties, bool canUpgrade) : this()
 		{
-			Title = $"Libation version {upgradeProperties.LatestRelease.ToString(3)} is now available.";
+			Title = $"Libation version {upgradeProperties.LatestRelease.ToVersionString()} is now available.";
 			PackageUrl = upgradeProperties.ZipUrl;
 			DownloadLinkText = upgradeProperties.ZipName;
 			ReleaseNotes = upgradeProperties.Notes;

Source/LibationAvalonia/LibationAvalonia.csproj

@@ -73,13 +73,13 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Avalonia.Controls.ColorPicker" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Diagnostics" Version="11.3.0" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'" />
-		<PackageReference Include="Avalonia" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Controls.DataGrid" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Desktop" Version="11.3.0" />
-		<PackageReference Include="Avalonia.ReactiveUI" Version="11.3.0" />
-		<PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.0" />
+		<PackageReference Include="Avalonia.Controls.ColorPicker" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Diagnostics" Version="11.3.2" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'" />
+		<PackageReference Include="Avalonia" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Controls.DataGrid" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Desktop" Version="11.3.2" />
+		<PackageReference Include="Avalonia.ReactiveUI" Version="11.3.2" />
+		<PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.2" />
 	</ItemGroup>
 
 	<ItemGroup>

Source/LibationAvalonia/MessageBox.cs

@@ -6,6 +6,7 @@ using DataLayer;
 using Dinah.Core.Logging;
 using LibationAvalonia.Dialogs;
 using LibationAvalonia.ViewModels.Dialogs;
+using LibationUiBase.Forms;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -13,92 +14,45 @@ using System.Threading.Tasks;
 
 namespace LibationAvalonia
 {
-	public enum DialogResult
-	{
-		None = 0,
-		OK = 1,
-		Cancel = 2,
-		Abort = 3,
-		Retry = 4,
-		Ignore = 5,
-		Yes = 6,
-		No = 7,
-		TryAgain = 10,
-		Continue = 11
-	}
-
-	public enum MessageBoxIcon
-	{
-		None = 0,
-		Error = 16,
-		Hand = 16,
-		Stop = 16,
-		Question = 32,
-		Exclamation = 48,
-		Warning = 48,
-		Asterisk = 64,
-		Information = 64
-	}
-
-	public enum MessageBoxButtons
-	{
-		OK,
-		OKCancel,
-		AbortRetryIgnore,
-		YesNoCancel,
-		YesNo,
-		RetryCancel,
-		CancelTryContinue
-	}
-
-	public enum MessageBoxDefaultButton
-	{
-		Button1,
-		Button2 = 256,
-		Button3 = 512,
-	}
 
 	public class MessageBox
 	{
-
 		public static Task<DialogResult> Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton)
 			=> ShowCoreAsync(null, text, caption, buttons, icon, defaultButton);
 		public static Task<DialogResult> Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, bool saveAndRestorePosition = true)
-					=> ShowCoreAsync(null, text, caption, buttons, icon, MessageBoxDefaultButton.Button1, saveAndRestorePosition);
+			=> ShowCoreAsync(null, text, caption, buttons, icon, MessageBoxDefaultButton.Button1, saveAndRestorePosition);
 		public static Task<DialogResult> Show(string text, string caption, MessageBoxButtons buttons)
-					=> ShowCoreAsync(null, text, caption, buttons, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
+			=> ShowCoreAsync(null, text, caption, buttons, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
 		public static Task<DialogResult> Show(string text, string caption)
-				=> ShowCoreAsync(null, text, caption, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
+			=> ShowCoreAsync(null, text, caption, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
 		public static Task<DialogResult> Show(string text)
-				=> ShowCoreAsync(null, text, string.Empty, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
-		public static Task<DialogResult> Show(Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton)
-					=> ShowCoreAsync(owner, text, caption, buttons, icon, defaultButton);
-
+			=> ShowCoreAsync(null, text, string.Empty, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
+		public static Task<DialogResult> Show(Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton, bool saveAndRestorePosition = true)
+			=> ShowCoreAsync(owner, text, caption, buttons, icon, defaultButton, saveAndRestorePosition);
 		public static Task<DialogResult> Show(Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
-					=> ShowCoreAsync(owner, text, caption, buttons, icon, MessageBoxDefaultButton.Button1);
+			=> ShowCoreAsync(owner, text, caption, buttons, icon, MessageBoxDefaultButton.Button1);
 		public static Task<DialogResult> Show(Window owner, string text, string caption, MessageBoxButtons buttons)
-				=> ShowCoreAsync(owner, text, caption, buttons, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
+			=> ShowCoreAsync(owner, text, caption, buttons, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
 		public static Task<DialogResult> Show(Window owner, string text, string caption)
-				=> ShowCoreAsync(owner, text, caption, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
+			=> ShowCoreAsync(owner, text, caption, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
 		public static Task<DialogResult> Show(Window owner, string text)
 			=> ShowCoreAsync(owner, text, string.Empty, MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1);
 
-
 		public static async Task VerboseLoggingWarning_ShowIfTrue()
 		{
 			// when turning on debug (and especially Verbose) to share logs, some privacy settings may not be obscured
 			if (Serilog.Log.Logger.IsVerboseEnabled())
-				await Show(@"
-Warning: verbose logging is enabled.
+				await Show("""
+				Warning: verbose logging is enabled.
 
-This should be used for debugging only. It creates many
-more logs and debug files, neither of which are as
-strictly anonymous.
+				This should be used for debugging only. It creates many
+				more logs and debug files, neither of which are as
+				strictly anonymous.
 
-When you are finished debugging, it's highly recommended
-to set your debug MinimumLevel to Information and restart
-Libation.
-".Trim(), "Verbose logging enabled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+				When you are finished debugging, it's highly recommended
+				to set your debug MinimumLevel to Information and restart
+				Libation.
+				""", "Verbose logging enabled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
 		}
 
 		/// <summary>
@@ -138,7 +92,8 @@ Libation.
 		{
 			// for development and debugging, show me what broke!
 			if (System.Diagnostics.Debugger.IsAttached)
-				throw exception;
+				//Wrap the exception to preserve its stack trace.
+				throw new Exception("An unhandled exception was encountered", exception);
 
 			try
 			{
@@ -152,12 +107,12 @@ Libation.
 		}
 
 		private static async Task<DialogResult> ShowCoreAsync(Window owner, string message, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton, bool saveAndRestorePosition = true)
+		=> await Dispatcher.UIThread.InvokeAsync(async () =>
 		{
 			owner = owner?.IsLoaded is true ? owner : null;
-			var dialog = await Dispatcher.UIThread.InvokeAsync(() => CreateMessageBox(owner, message, caption, buttons, icon, defaultButton, saveAndRestorePosition));
-
+			var dialog = CreateMessageBox(owner, message, caption, buttons, icon, defaultButton, saveAndRestorePosition);
 			return await DisplayWindow(dialog, owner);
-		}
+		});
 
 		private static MessageBoxWindow CreateMessageBox(Window owner, string message, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton, bool saveAndRestorePosition = true)
 		{
@@ -175,7 +130,6 @@ Libation.
 			tbx.MinWidth = vm.TextBlockMinWidth;
 			tbx.Text = message;
 
-			
 			var thisScreen = owner.Screens?.ScreenFromVisual(owner);
 
 			var maxSize
@@ -229,6 +183,5 @@ Libation.
 				return await toDisplay.ShowDialog<DialogResult>(owner);
 			}
 		}
-
 	}
 }

Source/LibationAvalonia/ViewModels/AvaloniaEntryStatus.cs

@@ -1,20 +0,0 @@
-using Avalonia.Media.Imaging;
-using DataLayer;
-using LibationUiBase.GridView;
-using System;
-
-#nullable enable
-namespace LibationAvalonia.ViewModels
-{
-	public class AvaloniaEntryStatus : EntryStatus, IEntryStatus, IComparable
-	{
-		private AvaloniaEntryStatus(LibraryBook libraryBook) : base(libraryBook) { }
-		public static EntryStatus Create(LibraryBook libraryBook) => new AvaloniaEntryStatus(libraryBook);
-
-		protected override Bitmap LoadImage(byte[] picture)
-			=> AvaloniaUtils.TryLoadImageOrDefault(picture, LibationFileManager.PictureSize._80x80);
-
-		//Button icons are handled by LiberateStatusButton
-		protected override Bitmap? GetResourceImage(string rescName) => null;
-	}
-}

Source/LibationAvalonia/ViewModels/Dialogs/MessageBoxViewModel.cs

@@ -1,4 +1,5 @@
-using System;
+using LibationUiBase.Forms;
+using System;
 
 namespace LibationAvalonia.ViewModels.Dialogs
 {

Source/LibationAvalonia/ViewModels/MainVM.Filters.cs

@@ -4,6 +4,7 @@ using Avalonia.Controls;
 using Avalonia.Data;
 using Avalonia.Input;
 using LibationFileManager;
+using LibationUiBase.Forms;
 using ReactiveUI;
 using System;
 using System.Linq;
@@ -14,8 +15,10 @@ namespace LibationAvalonia.ViewModels
 {
 	partial class MainVM
 	{
-		private QuickFilters.NamedFilter? lastGoodFilter = new(string.Empty, null);
-		private QuickFilters.NamedFilter? _selectedNamedFilter = new(string.Empty, null);
+		private string lastGoodSearch = string.Empty;
+		private QuickFilters.NamedFilter? lastGoodFilter => new(lastGoodSearch, null);
+
+        private QuickFilters.NamedFilter? _selectedNamedFilter = new(string.Empty, null);
 		private bool _firstFilterIsDefault = true;
 
 		/// <summary> Library filterting query </summary>
@@ -24,7 +27,6 @@ namespace LibationAvalonia.ViewModels
 		/// <summary> Indicates if the first quick filter is the default filter </summary>
 		public bool FirstFilterIsDefault { get => _firstFilterIsDefault; set => QuickFilters.UseDefault = this.RaiseAndSetIfChanged(ref _firstFilterIsDefault, value); }
 
-
 		private void Configure_Filters()
 		{
 			FirstFilterIsDefault = QuickFilters.UseDefault;
@@ -52,7 +54,7 @@ namespace LibationAvalonia.ViewModels
 		}
 
 		public void AddQuickFilterBtn() { if (SelectedNamedFilter != null) QuickFilters.Add(SelectedNamedFilter); }
-		public async Task FilterBtn() => await PerformFilter(SelectedNamedFilter);
+		public async Task FilterBtn(string filterString) => await PerformFilter(new(filterString, null));
 		public async Task FilterHelpBtn() => await new LibationAvalonia.Dialogs.SearchSyntaxDialog().ShowDialog(MainWindow);
 		public void ToggleFirstFilterIsDefault() => FirstFilterIsDefault = !FirstFilterIsDefault;
 		public async Task EditQuickFiltersAsync() => await new LibationAvalonia.Dialogs.EditQuickFilters().ShowDialog(MainWindow);
@@ -64,15 +66,16 @@ namespace LibationAvalonia.ViewModels
 			try
 			{
 				await ProductsDisplay.Filter(tryFilter);
-				lastGoodFilter = namedFilter;
+                lastGoodSearch = namedFilter?.Filter ?? "";
 			}
 			catch (Exception ex)
 			{
 				Serilog.Log.Logger.Error(ex, "Error performing filtering. {@namedFilter} {@lastGoodFilter}", namedFilter, lastGoodFilter);
 				await MessageBox.Show($"Bad filter string: \"{tryFilter}\"\r\n\r\n{ex.Message}", "Bad filter string", MessageBoxButtons.OK, MessageBoxIcon.Error);
 
-				// re-apply last good filter
-				await PerformFilter(lastGoodFilter);
+                // re-apply last good filter
+                namedFilter = (namedFilter ?? new(string.Empty, null)) with { Filter = lastGoodSearch };
+                await PerformFilter(namedFilter);
 			}
 		}
 

Source/LibationAvalonia/ViewModels/MainVM.Import.cs

@@ -7,6 +7,7 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Avalonia.Input;
+using LibationUiBase.Forms;
 
 #nullable enable
 namespace LibationAvalonia.ViewModels
@@ -19,6 +20,7 @@ namespace LibationAvalonia.ViewModels
 		private bool _removeButtonsVisible = Design.IsDesignMode;
 		private int _numAccountsScanning = 2;
 		private int _accountsCount = 0;
+		public string LocateAudiobooksTip => Configuration.GetHelpText("LocateAudiobooks");
 
 		/// <summary> Auto scanning accounts is enables </summary>
 		public bool AutoScanChecked { get => _autoScanChecked; set => Configuration.Instance.AutoScan = this.RaiseAndSetIfChanged(ref _autoScanChecked, value); }
@@ -67,7 +69,8 @@ namespace LibationAvalonia.ViewModels
 			MainWindow.Loaded += (_, _) =>
 			{
 				refreshImportMenu();
-				AccountsSettingsPersister.Saved += refreshImportMenu;
+				AccountsSettingsPersister.Saved += (_, _)
+				=> Avalonia.Threading.Dispatcher.UIThread.Invoke(refreshImportMenu);
 			};
 
 			AutoScanChecked = Configuration.Instance.AutoScan;
@@ -171,8 +174,19 @@ namespace LibationAvalonia.ViewModels
 
 		public async Task LocateAudiobooksAsync()
 		{
-			var locateDialog = new LibationAvalonia.Dialogs.LocateAudiobooksDialog();
-			await locateDialog.ShowDialog(MainWindow);
+			var result = await MessageBox.Show(
+				MainWindow, 
+				Configuration.GetHelpText(nameof(LibationAvalonia.Dialogs.LocateAudiobooksDialog)),
+				"Locate Previously-Liberated Audiobook Files",
+				MessageBoxButtons.OKCancel,
+				MessageBoxIcon.Information,
+				MessageBoxDefaultButton.Button1);
+
+			if (result is DialogResult.OK)
+			{
+				var locateDialog = new LibationAvalonia.Dialogs.LocateAudiobooksDialog();
+				await locateDialog.ShowDialog(MainWindow);
+			}
 		}
 
 		private void setyNumScanningAccounts(int numScanning)
@@ -201,7 +215,7 @@ namespace LibationAvalonia.ViewModels
 		{
 			try
 			{
-				var (totalProcessed, newAdded) = await LibraryCommands.ImportAccountAsync(accounts);
+				var (totalProcessed, newAdded) = await Task.Run(() => LibraryCommands.ImportAccountAsync(accounts));
 
 				// this is here instead of ScanEnd so that the following is only possible when it's user-initiated, not automatic loop
 				if (Configuration.Instance.ShowImportedStats && newAdded > 0)
@@ -221,7 +235,7 @@ namespace LibationAvalonia.ViewModels
 			}
 		}
 
-		private void refreshImportMenu(object? _ = null, EventArgs? __ = null)
+		private void refreshImportMenu()
 		{
 			using var persister = AudibleApiStorage.GetAccountsSettingsPersister();
 			AccountsCount = persister.AccountsSettings.Accounts.Count;

Source/LibationAvalonia/ViewModels/MainVM.Liberate.cs

@@ -4,6 +4,9 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using DataLayer;
+using LibationUiBase.Forms;
+using LibationUiBase;
+using System.Collections.Generic;
 
 #nullable enable
 namespace LibationAvalonia.ViewModels
@@ -12,19 +15,14 @@ namespace LibationAvalonia.ViewModels
 	{
 		public void Configure_Liberate() { }
 
-		public void BackupAllBooks()
+		public async Task BackupAllBooks()
 		{
 			try
 			{
-				setQueueCollapseState(false);
+				var unliberated = await Task.Run(() => DbContexts.GetLibrary_Flat_NoTracking().UnLiberated().ToArray());
 
-				Serilog.Log.Logger.Information("Begin backing up all library books");
-
-				ProcessQueue.AddDownloadDecrypt(
-					DbContexts
-					.GetLibrary_Flat_NoTracking()
-					.UnLiberated()
-					);
+				if (ProcessQueue.QueueDownloadDecrypt(unliberated))
+					setQueueCollapseState(false);
 			}
 			catch (Exception ex)
 			{
@@ -32,10 +30,10 @@ namespace LibationAvalonia.ViewModels
 			}
 		}
 
-		public void BackupAllPdfs()
+		public async Task BackupAllPdfs()
 		{
-			setQueueCollapseState(false);
-			ProcessQueue.AddDownloadPdf(DbContexts.GetLibrary_Flat_NoTracking().Where(lb => lb.Book.UserDefinedItem.PdfStatus is LiberatedStatus.NotLiberated));
+			if (ProcessQueue.QueueDownloadPdf(await Task.Run(() => DbContexts.GetLibrary_Flat_NoTracking())))
+				setQueueCollapseState(false);
 		}
 
 		public async Task ConvertAllToMp3Async()
@@ -48,12 +46,8 @@ namespace LibationAvalonia.ViewModels
 				"Convert all M4b => Mp3?",
 				MessageBoxButtons.YesNo,
 				MessageBoxIcon.Warning);
-			if (result == DialogResult.Yes)
-			{
+			if (result == DialogResult.Yes && ProcessQueue.QueueConvertToMp3(await Task.Run(() => DbContexts.GetLibrary_Flat_NoTracking())))
 				setQueueCollapseState(false);
-				ProcessQueue.AddConvertMp3(DbContexts.GetLibrary_Flat_NoTracking().Where(lb => lb.Book.UserDefinedItem.BookStatus is LiberatedStatus.Liberated && lb.Book.ContentType is ContentType.Product));
-			}
-			//Only Queue Liberated books for conversion.  This isn't a perfect filter, but it's better than nothing.
 		}
 
 		private void setQueueCollapseState(bool collapsed)

Source/LibationAvalonia/ViewModels/MainVM.ProcessQueue.cs

@@ -1,10 +1,11 @@
-using LibationFileManager;
-using System;
-using System.Linq;
-using DataLayer;
+using DataLayer;
 using Dinah.Core;
+using LibationFileManager;
+using LibationUiBase;
 using LibationUiBase.GridView;
 using ReactiveUI;
+using System;
+using System.Linq;
 
 #nullable enable
 namespace LibationAvalonia.ViewModels
@@ -37,50 +38,16 @@ namespace LibationAvalonia.ViewModels
 		{
 			try
 			{
-				if (libraryBooks.Length == 1)
+				if (ProcessQueue.QueueDownloadDecrypt(libraryBooks))
+					setQueueCollapseState(false);
+				else if (libraryBooks.Length == 1 && libraryBooks[0].Book.Audio_Exists())
 				{
-					var item = libraryBooks[0];
-
-					//Remove this item from the queue if it's already present and completed.
-					//Only do this when adding a single book at a time to prevent accidental
-					//extra downloads when queueing in batches.
-					ProcessQueue.RemoveCompleted(item);
-
-					if (item.Book.UserDefinedItem.BookStatus is LiberatedStatus.NotLiberated or LiberatedStatus.PartialDownload)
+					// liberated: open explorer to file
+					var filePath = AudibleFileStorage.Audio.GetPath(libraryBooks[0].Book.AudibleProductId);
+					if (!Go.To.File(filePath?.ShortPathName))
 					{
-						Serilog.Log.Logger.Information("Begin single book backup of {libraryBook}", item);
-						setQueueCollapseState(false);
-						ProcessQueue.AddDownloadDecrypt(item);
-					}
-					else if (item.Book.UserDefinedItem.PdfStatus is LiberatedStatus.NotLiberated)
-					{
-						Serilog.Log.Logger.Information("Begin single pdf backup of {libraryBook}", item);
-						setQueueCollapseState(false);
-						ProcessQueue.AddDownloadPdf(item);
-					}
-					else if (item.Book.Audio_Exists())
-					{
-						// liberated: open explorer to file
-						var filePath = AudibleFileStorage.Audio.GetPath(item.Book.AudibleProductId);
-
-						if (!Go.To.File(filePath?.ShortPathName))
-						{
-							var suffix = string.IsNullOrWhiteSpace(filePath) ? "" : $":\r\n{filePath}";
-							await MessageBox.Show($"File not found" + suffix);
-						}
-					}
-				}
-				else
-				{
-					var toLiberate
-						= libraryBooks
-						.Where(x => x.Book.UserDefinedItem.BookStatus is LiberatedStatus.NotLiberated or LiberatedStatus.PartialDownload || x.Book.UserDefinedItem.PdfStatus is LiberatedStatus.NotLiberated)
-						.ToArray();
-
-					if (toLiberate.Length > 0)
-					{
-						setQueueCollapseState(false);
-						ProcessQueue.AddDownloadDecrypt(toLiberate);
+						var suffix = string.IsNullOrWhiteSpace(filePath) ? "" : $":\r\n{filePath}";
+						await MessageBox.Show($"File not found" + suffix);
 					}
 				}
 			}
@@ -90,15 +57,14 @@ namespace LibationAvalonia.ViewModels
 			}
 		}
 
-		public void LiberateSeriesClicked(ISeriesEntry series)
+		public void LiberateSeriesClicked(SeriesEntry series)
 		{
 			try
 			{
-				setQueueCollapseState(false);
-
 				Serilog.Log.Logger.Information("Begin backing up all {series} episodes", series.LibraryBook);
 
-				ProcessQueue.AddDownloadDecrypt(series.Children.Select(c => c.LibraryBook).UnLiberated());
+				if (ProcessQueue.QueueDownloadDecrypt(series.Children.Select(c => c.LibraryBook).UnLiberated().ToArray()))
+					setQueueCollapseState(false);
 			}
 			catch (Exception ex)
 			{
@@ -110,13 +76,8 @@ namespace LibationAvalonia.ViewModels
 		{
 			try
 			{
-				var preLiberated = libraryBooks.Where(lb => lb.Book.UserDefinedItem.BookStatus is LiberatedStatus.Liberated).ToArray();
-				if (preLiberated.Length > 0)
-				{
-					Serilog.Log.Logger.Information("Begin convert {count} books to mp3", preLiberated.Length);
+				if (ProcessQueue.QueueConvertToMp3(libraryBooks))
 					setQueueCollapseState(false);
-					ProcessQueue.AddConvertMp3(preLiberated);
-				}
 			}
 			catch (Exception ex)
 			{

Source/LibationAvalonia/ViewModels/MainVM.ScanAuto.cs

@@ -5,6 +5,7 @@ using LibationFileManager;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 
 #nullable enable
 namespace LibationAvalonia.ViewModels
@@ -27,7 +28,7 @@ namespace LibationAvalonia.ViewModels
 				// in autoScan, new books SHALL NOT show dialog
 				try
 				{
-					await LibraryCommands.ImportAccountAsync(accounts);
+					await Task.Run(() => LibraryCommands.ImportAccountAsync(accounts));
 				}
 				catch (OperationCanceledException)
 				{

Source/LibationAvalonia/ViewModels/MainVM.VisibleBooks.cs

@@ -5,6 +5,9 @@ using DataLayer;
 using Avalonia.Threading;
 using LibationAvalonia.Dialogs;
 using ReactiveUI;
+using LibationUiBase.Forms;
+using System.Linq;
+using LibationUiBase;
 
 #nullable enable
 namespace LibationAvalonia.ViewModels
@@ -71,15 +74,8 @@ namespace LibationAvalonia.ViewModels
 		{
 			try
 			{
-				setQueueCollapseState(false);
-
-				Serilog.Log.Logger.Information("Begin backing up visible library books");
-
-				ProcessQueue.AddDownloadDecrypt(
-					ProductsDisplay
-					.GetVisibleBookEntries()
-					.UnLiberated()
-					);
+				if (ProcessQueue.QueueDownloadDecrypt(ProductsDisplay.GetVisibleBookEntries().UnLiberated().ToArray()))
+					setQueueCollapseState(false);
 			}
 			catch (Exception ex)
 			{

Source/LibationAvalonia/ViewModels/MainVM._NoUI.cs

@@ -1,5 +1,6 @@
 using LibationFileManager;
 using LibationUiBase;
+using System;
 using System.IO;
 
 #nullable enable
@@ -7,7 +8,7 @@ namespace LibationAvalonia.ViewModels
 {
 	partial class MainVM
 	{
-		private void Configure_NonUI()
+		public  static void Configure_NonUI()
 		{
 			using var ms1 = new MemoryStream();
 			App.OpenAsset("img-coverart-prod-unavailable_80x80.jpg").CopyTo(ms1);
@@ -23,6 +24,20 @@ namespace LibationAvalonia.ViewModels
 			PictureStorage.SetDefaultImage(PictureSize.Native, ms3.ToArray());
 
 			BaseUtil.SetLoadImageDelegate(AvaloniaUtils.TryLoadImageOrDefault);
+			BaseUtil.SetLoadResourceImageDelegate(LoadResourceImage);
+		}
+		private static Avalonia.Media.Imaging.Bitmap? LoadResourceImage(string resourceName)
+		{
+			try
+			{
+				using var stream = App.OpenAsset(resourceName);
+				return new Avalonia.Media.Imaging.Bitmap(stream);
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Error(ex, "Failed to load resource image: {ResourceName}", resourceName);
+				return null;
+			}
 		}
 	}
 }