I just bought a 2004 A4 yesterday and I wanted to install my Phatnoise from my 2001 A4, but I'm not sure if it's compatible. I've sifted through the forums and haven't found too much info. I don't have the Bose setup, it does have the built-in 6 disc changer and is setup for satellite radio (but I don't have tuner, so it's not being used). Can anyone give me some info on if it's possible to wire my Phatnoise to this headunit and what I need (cables) or whatever. Thanks for any help..........I NEED MY PHATNOISE BACK!!!