How can one hook up their mp3 player to their car stereo?

Yes, your stereo must have a AUX port, by connecting AUX(auxiliary) cable from your Mp3 to car stereo, you can hear the music played in your Mp3 in your car. Eonon has such great car DVD player with AUX input. Very easy to use! http://www.eonon.com/One-Din-DVD-Player/E0823.html?utm_source=wiki.answers.com&utm_medium=answer&utm_campaign=answer