Didn't play on my machine. That wierd circle came up and I could load a song but no noise came out. The song played fine with Windows Media Player.
I've got a Dell with one of those built in Yamaha soundcards.
As I'm sure you already know, the only trouble with MIDI in general is there's no standard for what an instrument should sound like. Sure, instrument # X is a Base Drum, but that could be any sample or even a wierd synthasized one. So QA goes to hell. Still, it's better than the days where I just used the default PC speaker-
BEEP BEEP BEEEEP BEEEEP BEEP BLOOP