|Does your radio have an 3.5mm aux input jack? in so, just get a male to male 3.5 stereo cable and plug it in. |
If not, you can get a couple of different type of adaptors. One type will convert the audio into an FM signal that can be picked up by your FM radio. If your car radio has a cassette player you can get an adaptor that looks like a cassette that fits into the cassette player and has a cable that plugs into your MP3 player.