I have just purchased a UK A6 Final Eddition Avant with the new MMI System that I believe they use in the A3. It had DVD Based Sat Nav and can play MP3's. My Question is when I recently went to fit a car kit I noticed that all plugs on the rear of the system were populated and I was wondering if there is an existing loom in the car for Telephone or can I buy a Bluetooth interface. I would like to integrate the phone in to the MMI system. Also can you purchase an after market TV tuner for the system

Thanks..