I would like the Plex desktop app to add support for spatial audio for the macOS client. This is very similar to Support for Apple Spatial Audio with the exception of it being for the Mac client (it would probably use the same CoreAudio APIs). Granted, this is limited to Apple Silicon Macs, and the executable might need to be Apple Silicon (or Universal) to take advantage of the API.
I have a set of AirPods 3 that support Spatial Audio, but only Infuse seems to support it.
I know you get Spatial Audio in Safari, but Safari can’t play EAC3 and other codecs. It would be really nice if the app could use Spatial Audio.