[mdpais]

Thanks Binh. The first option worked. Any idea why I had this problem? The files copied to the player so that means there was space on the player.

Another thing. Right now I can play only about 63 mp3 files. If I store more than that, the files copied last don't play. The moment I try to play any of those files the player shuts off and restarts. Once again there is space on the player. If I check the properties of the drive it shows that it has approx. half the player empty.

A small tip that you can share with other MP4/MP3 player users. In case you find that your player restarts to moment you try to play some MP3 files and you don't know which are those files, try this. Connect your player to your PC. Open up the folder that contains the files and select detailed view. Right click the heading bar and ensure that "Duration" is ticked. The duration of each song will now be displayed. If the duration is not displayed for any song, that song will not play on your player.