http://www.mp3-box.org/mp3-car-player-adapter/

How to play ipod/blackberry/mp3 player in car with no adapter?
I have a 2003 Honda Odyssey and I wanna play my ipod/blackberry in the car, but there’s not cassette player or power adapter in the car. I’m pretty sure the only option for me here is to pay to install something, but I wanna make sure they’re absolutely nothing else I can do here before that. Also, if that is my only option, how much will it cost me?
Thanks for the answers! Exactly how would the Bluetooth for the blackberry?
And also, there’s nothing in that car. No power outlet of cigarette lighter either. I guess Honda’s reasoning was that it was a minivan? Either way, there’s nothing. So that rules out itrip or anything else that derived its power from that.
As for the new stereo thing I’m assuming that’s my best bet. is it a while new stereo face thing that’s compatible with an mp3 player/ipod that has a wire coming from it, or a face that has connections(holes) on the front? if so, which is cheaper?
you can get a fm transmitter $30-$40 but these kinda suck usually get a lot of static next option would be a interface that would install to your head unit $100-$150 the best option would be to replace your head unit with a new one that is ipod compatible $150 and up
Car Stereo Cassette Adapter for iPod MP3 CD Player from Dinodirect.com