if thats the same thing as chiptune files then there is a new BASS plugin that can handle those files:
as0, asc, ay, chi, cop, dmm, dst, ftc, gtr, m, psc, psg, psm, pt1, pt2, pt3, sid, sqd, sqt, st1, s, st3, stc, stp, str, tf0, tfc, tfd, tfe, ts, txt, vtx, ym.
If so, could you PM me a link to one the files so i can test it?
Otherwise for winamp plugins, most work but not all - it depends on how the plugin is implemented