If I understand the situation fully... There has been talk of implementing a dummy audio.device that reroutes calls to AHI, however it is not a priority as most software only use the audio.device to initialize the audio channels and then bangs the hardware directly to generate the actual audio.
Unfortuantly, that means all non-AHI software sit silent. A bit like on a Draco I guess.

Perhaps this software would be supported on MOS running on Classic amiga's, I don't know.
It's a bit annoying actually, but then again I've got quite a lot of AHI-supporting software to play with including Alien Breed 3D II TKG (with patch). :-D