Audio Systems: replace factory radio from excursion with after market compatability, OEM, automobile

Question
I just bought a 2005 Excursion that has a factory installed 6 disc cd player that isn't working properly.  I also have the factory installed DVD system.  My question is that i am thinking of replacing the radio with one of the all inclusive type radio/cd/mp3/navigation/satellite radio that has the 6 or 7 inch screen.  I am just concerned as to whether or not it will impact my ability to play the DVD audio through my speakers if I want to.  Most of the time my kids will use wireless headphones, but I still want the option, I also want to be able to listen to my radio up front while my kids watch their move and listen over  their headphones.  I have a suburban and that is how it works, but before I go buy an expensive radio i wanted to ask about recommendations or compatability issues.  Thanks

Answer
Good question, Skip.

The best resolve for questions which concern interfacing to an existing factory A/V system is to go to www.crutchfield.com
Copy/Paste this link in to a browser to go to their 'outfit my car' page:
http://www.crutchfield.com/cgi-bin/autoinfo/autoinfo.asp?lp=%2fapp%2fCar%2fMyCar...
Fill in the required data and you will only see products that 'fit' and work with that factory system. You can also see if you will need any special adapters (CF will usually provide these adapters and advise free of charge when you purchase the headunit through them).
If you need to talk to one of their reps on the phone call: 1-800-319-8264.

Have fun and good luck.

Jerry Mael