How do you connect an mp3 player to a Mitsubishi Galant?

You are going to have to have a line in jack that connects to your mp3's hole were you put the headphones. There will usually be a place in the car that says "line in" plug the other peice into the "line in" hole in the car. There will be a button that says AUX usually by your radio push that. Then it will usually play. Unless the Galant does not have a "line in" hole