I remember a song I made some years ago, with only samples (no instruments). When played with modplug, it sounds OK (at least for me), but when played with winamp, it sounds awful; specially, a sax sample I have taken from a solo from Dick Heckstall-Smith, and sounded quite realistic in modplug, was a disaster in winamp. I have noticed many diferences from then playing .it files with modplug and winamp. And, of course, always sounded worse with winamp.