About plug-in:

You can find here an atari plug-in for WinAmp written by adept_zap. With that plug-in you will be able to play .tmc, .tm8 and .mpt files using WinAmp (by Nullsoft). .tmc and .tm8 files are files produced by program called Theta Music Composer (written by Marcin Lewandowski on Atari xl/xe computers). .mpt files are files produced by program called Music ProTracker (written by Adam Bienias). Plug-in is free to use and distribute.