Was necessary to restore db from 20.2, so I am adding missing answers :
Which Ultima games are you having problems with? I have every Dos Ultima running without problems on my Nexus 7.
Wasteland just uses the PC speaker for sound, so make sure the PC Speaker box is checked. I don’t think it’s on by default. That goes the same for some of the earliest Ultima games.
Ok, it seems to be working now. When I start the Ultimas from the default GUI or with your (ChrisG) .mgc’s, I don’t get any sound. If all I do is check the Expert settings then it will work.
I also just tried turning PC Speaker on, as you suggested and that seems to work with default and your .mgc’s.