I turned the smooth scrolling off and it did make a difference, but by no means did it solve the problem. The music still slows down and skips, just not quite as much. Those of you suggesting I try a separate sound card, please reread the post, I already tried that and it did not help. Installing a PCI video card did seem to help, but as I said in the original post, I need this problem solved without adding new hardware. Thanks for the research Justin, I will try using Winamp to see if it plays the midi files any better, but as I said in the original post, I need to get it working with Windows Media Player.