Clamp the AX Volume to prevent clipping.  Patch by hk.konpie.  Fixes issue 7519.

Clamp the AX Volume to prevent clipping.  Patch by hk.konpie.  Fixes issue 7519.
iirc, I had brought this clipping range up with @delroth before (possibly related to something else, and I was told the correct range was [-32767, 32767].

This is assuming I'm not misremembering anything.