is something like a 6 dvd changer out there that works well with the avic n3? i cant seem to find one, maybe im just looking in the wrong places...i dont need anything crazy like a 12 disc or anything, just something so i can keep my nav disc in the changer at all times...

No, there is no DVD changer that allows you to run the nav disk from it. You can buy a DVD changer and have several music DVDs in it, but unfortionately not the maps.