To start off with if i'm in the wrong forum sorry. I have been downloading mp3's and syncing them to my mp3 player with windows media. The songs play fine on the computer and on the cd's i've made also. But for some reason after a while of being on my mp3 player some songs will quit playing halfway through. Another problem is that one day a song will play and the next day the player says file format not supported. Any help appreciated, and again if i'm in the wrong forum sorry.