Im sure its been explained lots of times but i cant wrap my head around it so any help would be great! I have the standard stereo concert which i believe to be concert II as its CD? Iv been quoted crazy prices for a new radio and harness so i can use my wheel controls and sub.rear speakers. Is it possible to buy something to allow me to plug in an AUX input cable for my phone? For example.. will this work? Audi A2 A3 A4 TT iPod iPhone AUX input adapter 3.5mm jack CTVADX002 Concert 2006 | eBay Cheers.