Up until a few weeks ago, I was using WMP 8.? on this work computer, and the sound was standard for both waves and mp3's, among other things. The tech guy updated it to wmp 10 (no one else has update access) so that I could access some other media (The Daily Show files...hahaha), and now the playback quality sucks. Unless there's something I missed in the performance panel, it just has inferior sound quality. This blows.