I was also wondering why there werent many discman player's that supported this,
as its pretty convienient to throw 4.7gb of mp3s on a single disc, and youd think
many companies would haved seized this opportunity by now. Apparently sony has one though (MPD-AP20U) , thats capable of playing DVD movies and CD/DVD burning, and the playing of DVD mp3 discs -
http://www.afterdawn.com/news/archive/3691.cfmIts not a marketed feature of the player, but as youll see written in the formums
ppl have used it with mp3 dvd discs, just it seems to have some problems with DVD-R, so yeah youd have to use DVD-RW or maybe DVD+R. I read somewhere the battery life is decent when playing DVD mp3s but im not totally sure. The biggest problem with these players is the lack of a screen similar to 4GB HD players as you cant scroll through anything with the tiny LCD.