Drag-and-drop support for VST, SF2

include/file_browser.h

@@ -224,6 +224,8 @@ private:
 	static QPixmap * s_projectFilePixmap;
 	static QPixmap * s_presetFilePixmap;
 	static QPixmap * s_sampleFilePixmap;
+	static QPixmap * s_soundfontFilePixmap;
+	static QPixmap * s_vstPluginFilePixmap;
 	static QPixmap * s_midiFilePixmap;
 	static QPixmap * s_flpFilePixmap;
 	static QPixmap * s_unknownFilePixmap;