Solution game from LAU
I worked this out recently for Impro-Visor (I have a Delta 1010LT, which
also does not have MIDI). It has to do with connecting raw MIDI with a
sequencer like timidity:
sudo modprobe snd-virmidi
timidity -iAqqq -B8,8 & # don't know if the -B8,8 is really necessary
connect the first VirMIDI port to the first Timidity port (I use
qjackctl and the ports are under the ALSA tab in the Connections window)
In Impro-Visor, select the first VirMIDI port for output (or whichever
one you connected to Timidity in Step 3).
Play and enjoy!
Google "timidity virmidi" to find several pages describing various
aspects of this, including how to use aconnect to accomplish Step 3.