Playing iPod thru car system?

if your head unit has cd changer controls, you can usually use that input. for 200+ audis DICE electronics makes a nice integration piece, that is what I use and it not only sounds better than bluetooth, I have steering wheel control fo the ipod.

May have to get a newer multimedia head unit that has iPod kit. The newer head units have as USB input.

I just went through that myself.My car unit didn't have inputs and I bought a usa-spec device from Crutchfield.com.It is awesome some installation is required ,nothing complicated though.Check usaspec.com to see which model fits your car.
Best of luck
George

The only options I know of that don't involve replacing or adding auxiliary equipment to your existing system are either an FM transmitter that connects to the iPod and plays through your FM radio or, if you have a cassette deck in your car, a cassette tape adapter that plugs into the iPod's headphone jack.

The FM transmitters do work, at least some of them do, but require you to change FM frequencies if you drive within range of a station using that frequency. Whether or not it's worth the trouble depends a lot on where you live and how crowded the FM band is. I've had good luck with a Kensington unit.