Bug Fixes

1. Fixed a crash when playing 16-bit WAV files (thanks to @FunkeymonkeyTTR).
2. Fixed an issue where the duration of some M4A files was incorrect.
3. Fixed an issue where some M4A files could not be played.
4. Fixed an issue where some artists were not displayed on the statistics page.

Special thanks to @FunkeymonkeyTTR for the help and support.