I had the same issue. After much testing, I figured this out.. You will have to move all of the music into the "AUDIO" folder. For what ever reason it will not play songs one after another in any other folder. However, it is a pain in the rear. You must move each song one at a time. I tried to move whole albums and it did not work. When I "synched" the unit with windows media to download music, it stored all the music to the "FILES" folder.. It put them ther eon it's own. VERY difficult to do.. It will be time consuming.. Once moved, it plays music until you turn it off or it runs out of power..