Hi Rikki,
thanks for the comments. AJ, thanks also!

Yes, the Casio can transmit midi in all 16 channels, and sounds good enough in HyperCanvas. Also, it seems like OMB is a nice program to have, but they could make the demo last longer than 30 sec to give a better taste.

I have a tiny little problem though, anthough Casio sends all the accompaniments in MIDI OUT, for no apparent reason they have done something with the bass channel, and so it plays one octave higher than it should be.

Solving this one will please me immensely, to say the least. How can I change that? It cant be changed in the Casio itself, it has to be changed in the receiving end.

I am having a "noticeable" lag in HyperCanvas. forte says it is 10 ms, sounds more like pressing the same key in quick succession. I hope it can be reduced with changing the soundcard (currently a $6 CMI 8738 chipset), I'll get a SB live or something from a friend and test, and I'll report back my findings.
If you have any more ideas, please share.