how to play music videos, dvd's, clips, etc on the lcd
 

so i asked this before but didn't get much. i'm trying to figure out how to play music videos and dvd's on the lcd monitor that comes stock with the car. i don't have navi, but i know there's gotta be some way to dl music videos and watch them on the lcd screen while the car is in motion. Do i need to get one of those portables and hook it up or something and leave it in backseat or is there something a professional shop can do to make it work?

There is no known way to accomplish this while the car is in motion. This would require a hack to the system which has not been created yet.