I've encountered a bug in Audio Overload v2.0b10 test 1 with songs fading out when they shouldn't be. If you play a track that has a fade to the end of it (I assume through ID666 tags) to the point where it begins to fade out and then click the "^" button (the one that restarts the track), the track continues to fade, resulting in that track ending in however much time was remaining in the fade. I tested this by playing the song linked below to approximately 3:26, then clicking the "^" button.
I believe this bug is also in v2.0b9.
The song I was using while testing was
Chrono Trigger - Warlock Battle (Battle with Magus).