I may have missed it in the shoutbox but I've got a weird Votrax thing happening with Aaron's checkin w/ my IV/Play front end:
If I start wow (Wizard of Wor) from inside IV/Play and then press insert for 5 seconds on the demo screen I get a full MAME hang/crash and have to taskmngr kill it. I think it's when the second round of votrax sounds are said, doesn't happen in demo of Gorf.
Regular UI of MAME is ok, so is command-line, but I've never seen that sort of hang from inside a front end that calls mame just passing on a command-line. Tip of tree, from this morning mame0224-452-gf2257fcbaae.
I think IV/Play listens for some error output from MAME as it brings up ROM missing errors, maybe it's catching something?
Is the new soundsystem or votrax outputting debug/diagnostic info as its running?