Talking about things that have come about as a result of this post. Last night I used ITUNES and made a MP3 DVD using a blank DVD disk. As a result I was able to place about 1200 tracks onto the DVD. This DVD worked in both the SATNAV DVD drive along with the DVD drive for the rear entertainment system. It takes a little while to get going, but once it does it works wonderfully. The only problem with using the SATNAV drive of course is the inability to use the SATNAV features while you play the MP3 DVD.