That was it, thanks - I was assuming it would come out through the speakers on my PC, but was wrong. Thanks!

I am using an actualy MT-32. So far I've tried booting up The Colonel's Bequest. I've used the command mixer /listmidi and the device shows up. I've set it as the default device in DOSBOX config. When I load the game, it displays the Midi Message: Welcome to the 20's! and The Colonel's Bequest. …