i just received an optimus digital camera/camcorder/mp3 player as a christmas gift. i kinda get how to work the camera part, but i'm really interested in the mp3 player. i installed all the stuff, and hooked up my usb to the computer. then i went to windows media player and clicked portable device. it let me edit a playlist then copied them to my usb. however, when i went to the mp3 menu on my device it showed "no files" i've played with this stupid thing for two days and i'm clueless. if anyone has any ideas on how to copy music to my mp3 player i would really appreciate the help! thanks and merry christmas!