The easy way but not really the best is to find a car ipod dock that has an fm modulator built in, I am pretty sure that someone makes one, this would allow you to dock the ipod, then tune your stereo to an FM station usually lower frequency like 88. 5 or something and hear the ipod, should work pretty good and if you get a good one it should also charge your ipod. The more involved way is to change out your headunit to an aftermarket one, alot of the new headunits have ipod dock capability, so you buy the radio, the ipod dock for it, then you run the wire and have a dock that interfaces with the headunit, some allow you to control the ipod from the headunit, my partner has the pioneer navigation head unit with an ipod dock, backup camera, bluetooth, and XM, everything is controlled on the touchscreen, or with the remote. Thats how it is done.