Bewitchment custom mob sounds seem to be at max volume regardless of distance.

Which mobs in particular are you noticing this with? Most of the Bewitchment mobs do it the same way vanilla does.

I've noticed it with ghosts, crows, snakes, owls, hellhounds, and a strange sinister laughter that I haven't been able to pinpoint yet.

Owls for sure, and I'm getting the sinister laughter too but can't find the culprit either.

Ordinarily the mob noises get attenuated for distance but the Bewitchment mob sounds seem to be coming from the playermodel itself so discerning the source is kinda difficult.

The sounds themselves are quite nice despite the volume weirdness. Great job, love the mod!

Yeah, I have a nice giggle every time I hear a crow, but my friend is saying that every time they fly over a desert, it sounds like there's a snake in their pocket.

It has to do with sounds being in stereo and not mono, sound dev has been notified