I don't think its an easy plug and play procedure. Although if you wanted to use the stock changer and an add on like aux in for a dvd player you can get auxilary addons for stock radios. I have one in mine, a Peripherial aux input which allows me to have three rca inputs at the flick of a switch. One goes to my DVD player, and the other for an mp3 player. The third sits around possibly for siruis.
Works great. Although if you feed something through the 12v adapters back into the radio you get minor feedback as the adapter already has a filter on it I found out.
