Proposal: multiple channels per player for voice chat

[SNMetamorph]

Example feature: in some hyphotetical mod we have cars and also we have in-game music player in which we can select any track from local user files that will be played in car. But we also want to other players can hear stuff which are playing inside our car, therefore for this we need some kind of voice chat, but in this case sound input should be from music player instead of microphone, and sound emitter should be linked to player's car instead of player. I think this can be somehow implemented with splitting player voice chat to two channels, first will be used as always and second can be controlled from game logic? So it's just suggestion and open to discussion how this feature can be implemented in clear way.