Hi,
I just purchased a 2004 Audi S4 and am seeking info on adding an Aftermarket Alpine CD/MP3 player. This may have been discussed elsewhere so please direct me there.

I'm new to Audi. Can someone please explain the basic setup of the audio system in a S4: internal amp, satellite radio link, bose system, dash kits and harnesses?

My ride has the basic cd/tape player setup without navigation.

Thanks.