theres a wireless remote that you can use with the av box that controls the functions. From what Ive read on other forums, its almost as fast and smooth as the ipod itself.
If I had an ipod I might consider getting this box and using the DIN.5 location of the headunit now for a nice 7"... but alas I will not support a software giant that doesnt allow me to freely pirate my music should i feel so inclined.