well I stopped caring for these plugins (the Oldskool plugin plays a fair bit of chiptunes as well), because I use Deliplayer. A lot will jump here and say it'sa memory hog, but I don't care, it works just great on my 32MB system while running other stuff, so I don't see the problem
, and it plays around 130 types of tunes.
www.deliplayer.com , just lovely.
Of course it would be best to use DeliTracker on a real Amiga/emulator, because some of the Amiga replayers only work in the original Delitracker.
And if you haev a 1200, use EaglePLayer