Has anyone tested the DVD entertainment system yet? I ordered my new Acadia SLT-1 on February first (in Boise ID) with the DVD Entertainment system. My only question is can you utilize the Aux or radio feature while the kids are watching a DVD? Or does the DVD take over the entire system? Really like the thought of the kids watching the movie with headphones on... but would like to still listen to my Ipod over the stereo system.