As an aside, if you like synthsounds and trackers, do give MusicLineEditor a go. It's not quite protracker style, but it can make some very nice sounds.
It basically uses very short waveforms (not quite chip tune, but close) which can be fed through various effects (phase, filter, etc) and is capable of some quite remarkable sounds on a basic 020+ class amiga.
It will also do 8 channels, but you need a faster CPU then.