So mumble positional audio supports wow, however the mumble wow plugin is out of date. Apparently some kind of game hacking is required to make it work again so I thought this would be a good place to ask..
This is what I could find but I didn't really understand enough of it to do it myself. If someone here can make a plugin that enables positional audio to work for wow again then I will rep you for sure.
HackPositionalAudio - Mumble
Thx