MIDI doesn't play in games (9.22, G3)

[Valet2]

The main reason I got my iMac G3 was the will to play a mac version of System Shock on it. But the music (in midi) simply doesn't play! The quicktime says there's a quicktime synthesizer activated, but - no music.

It actually works in sheepshaver for some reason.

[Valet2]

Okay, it appeared to be a MacOS 9 problem. When I downgraded to 8.6 midi music started playing. At least in System Shock.

Why I decided to check the previous version of the system - I noticed that both Sheepshaver and Basilisk emulators have the 8.0 system. Thought that might be the answer.