Hello,
Now look what I found: http://www.serdashop.com/waveblaster
Seems like a cute little widget for any Midibox project needing a GM soundboard. PCB with a SMD sound IC, takes 5V power and ttl midi in and out comes sound. We could stuff it in a MBSEQ for onboard sounds. Or in Midio128 for an advanced midi file player. Or... or..
I'll get one and give it a try!