I've used Windows 2000, Xp Home, and the trial of Server 2003. My mp3s sometimes just stop playing and I can go to another song and it plays... but they keep hanging up. I've used the sound card in my mother board and an Emu 1820m but both do the same thing. I can play movies all the way through without them messing up. But I use my pc as a recording studio of sorts and this just messes things up. I use foobar2000 for mp3s and media player classic for movies. Does anyone else have this problem? I just need to figure out how to fix it.