i've got a panasonic cq-3305 cd player in my car. right now i'm using and griffin adapter to play my iphone through the head units aux input. i want to buy the ipod interface for the deck and was wondering if anyone knew if it would work or not with the iphone. the panasonic interface i am looking at is the ca-dc300u. any suggestions would be appreciated. i dont want to spend the money and not have it work. also i think i've read some reviews saying it doesnt work with newer ipods, so is that also iphone?