There's a library Valve made for spatial audio for games (inc. VR). I've played around with it a bit, it's incredible. I'm surprised more games haven't adopted it.

https://valvesoftware.github.io/steam-audio/

Oh yeah, I forgot about this. I think it was a bit less developed last I looked. Not sure if there was another reason I wasn't considering it. Thanks!

edit: ah, it's because it is a plugin for Unity's audio system which I've already determined adds more latency than I want.

Thanks! I joined your Discord... And looks like I "liked" your Audiocube post on FB about 4 years ago :-)