03 Escalade NAV/DVD

IS there a way to make the Navigation system play DVD movies? I get a "This is not a Navigation Map Disk" when I attempt to play one, even when I am in Park with the Emergency brake on. The car is equiped with the RSE DVD, if that makes a difference.

i dont think you can get the nav to play dvd's, atleast i havent figured out how to do so on mine.