First time poster with a question...well actually a couple of questions

My A4 comes with a Concert II. No changer in the car, and I'm not positive that the car is wired for one anyways...will search for that today.

Considering the Dension Ice Plus for my Ipod integration, will the Concert II controls be able to support the Ipod?

Also, since I bought it used, I dont have the factory stereo code. I've read that as long as the headunit is going back into the same car, the code does not have to be re-entered after a powerdown. Is this correct?

Thanks in advance