I’ve red on dev forum that there are plans for 3d audio, maybe with OpenAL implementation. If so, you can look at my c++ OpenAL wrapper at Auio3D. Feel free to use & modify it, if only find it useful in some way. There is no license.
It was originally developed for Celestia, that’s why there are its name in macros.
A bunch of classics here on the cheap if you get them all in one bundle