Bus audio in

[lryd2l]

was wondering if it's possible to turn a mediaplayer (ipod) on my carradio. The model is sony cdx m600r. Does anyone has a clue? It has a bus audio in but i can't select it from my source

 

[Spiffyfast]

is the bus audio in just a small headphone jack? b/c on a pioneer player I used to have I could play my mp3 player through that and it was labeled Aux when I scrolled through sources, only showed up though when there was a signal coming through it