rsx-d3

Thank you for you guys help. At least clear up my doubts.

I just got my D3 few weeks ago. I'd like to figure out the way to use only one DVD for navigation and the music. In this case, I don't have to swap between map and the music. Is it possible to burn a copy of the NAV DVD with mp3 files in order to use only one DVD for both purposes. I searched the forum but didn't find the info. I also used Nero to copy all the files from the NAV DVD plus some mp3 under a separate directory. The system only reads the mp3 not the map. Thanks for the help.