It was not in my DEVS: where the docs told me to install it, so I'm guessing it was not included with MorphOS?
MorphOS components are in MOSSYS:, so list MOSSYS:Devs/audio.device should show it.
Sure would be nice to have Sound on some of these old PPC games...
I think that most of them should have proper audio really. At least the ones that use AHI for audio.