Trygve,
That is a sort of solution, however I do not believe it will do program changes right.

Your situation is very close to what I was/am battling with. This is echoing Mario's request/cry to open up mixer to more MIDI channels.

Once, I posted a request in wishlist to have an independent midi channel that can host 16 tracks of midi, not the awkward way that it is now (goes into to melody... and you know the rest smile ) but actually a dedicated channel that will host a midi file that will follow chord grid / changes and which can be connected to VSTsynthfont, Sonic or sky is the limit, without interfering or taking over tracks that can be used for RT's/Rd's

I had a drawing, but unfortunately tinypic hosting went belly up, but here is the thread:

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=519297&Searchpage=1&Main=74814&Words=mixer&Search=true#Post519297

In any case, VSTsynthfont is an excellent and compact, one of a kind tool that allows for some heavy duty SF2 banks to be loaded. It will be very useful if BIAB will allow independent MIDI track to make use of all 16 channels, not touching other mixer things.