I know PeeJay mentioned this to me a while back, but not sure if it was reported here.
On pc, you can play .MP3 music files while windowed, but if you go full screen (either at start up or change to full screen in-game), then any .MP3 file will stop playing and no further .MP3s can be played.
Gernot - you can test this in my game by pressing "1" in-game. The game switches to full-screen mode and music dies. .WAV sound still plays though.
Thx. On my Bug list.
Fixed in next update?
Yay :)