Double Din Question

I want to put a flip down monitor in my new 08 cc for the kids soon. My question is; is there a double din that will play a DVD to the monitor with an aux audio out for an additional speaker an still allow you to listen to the radio?

Or is there a mountable unit for the roof of the cab for with an aux audio out that anyone knows of.

I just dont want to have to listen to only a movie in the truck. I know they have headphone units but my kids a little and I would rather not put headphones on them.

Thanks
Frank