i noticed the music just stops for no reason when playing or saving etc. they had a patch to fix this in DD, so I hope they fix it in BD
I had this just happen to me, I was in the Battlefields (Act I) for quite a long time, and eventually the music just cut off and never started back up again (was off for at least 15 mins or so I'd say, maybe longer...eventually I just exited the game and re-entered to get it going again)
