Some pretty clever carpc alternatives to the Factory Nav setup in the various topics on here, very impressive. However, one thing that puzzles me is interfacing with the existing Mcintosh audio setup.
Has anyone managed to integrate theirs to override the Radio/CD output with its own audio when needed and then switch back?
I imagine this is how the factory Nav set-up works for spoken voice commands but I can’t find any mention of people doing this. It seems everyone sends the carpc audio separately through AUX.
Any ideas?

