I ripped a track from a cd to wma(64kbps) and mp3(192kbps) the wma file was 2megs @ 4minutes.. the mp3 was 7megs @ 4minutes. I listened to both tracks in winamp and media player @ random and tried to see if I could tell the which was which and I couldn't. Am I seriously tone deaf or is there very little difference in quallity between these formats. I just found it amazing because of the difference in size... 2megs as compared to 7megs.. and no obvious loss in listening quality...