I have an audio a3 2.0 tdi bj 2003, I have the standard radio audio concert in it. I also have a navigation system. do you know if this is affected when I convert the radio? I stick it over a stick at the handbrake, and it is displayed in the onboard computer. my problem is that I don’t need imemr cd’s but can also connect a usb stick for example or that mp3s can be read on my new radio. can also be read with my new radio the steering wheel remote service use or do I have to buy a special one? or can I just somehow build a connection at the back that I can connect a usb stick? me the constant cd burning is simply too annoying… with the look of the radio I am satisfied, my only problem is as I said, that it can not read mp3’s… would be happy to answer even if I am female ^^ lg, birteee