rncbc.org a.k.a. Rui Nuno Capela

I have no idea atm. but I'll be looking in a way to disable or leave a MIDI channel unassigned, that is having no soundfont preset assigned. Maybe that can come to your help.

Seeya

[UPDATE] After a cursory look into fluidsynth code I'm not sure how one can reset a MIDI channel as having NO preset assigned. Ok, there's one hacky way: select a bogus bank number, however that doesn't seem to work at all on MIDI channel 10 (GM Drums channel incidentally) and overall it just doesn't seem a Good-Thing-To-Do(tm).

I guess all this needs is a brand new fluidsynth API call...