Sorry to hear that.Please try to format your player,connect your player with your pc then click the removable disk(that is the player on "my computer") on the right, then choose "format", under the format file, please choose "FAT" . After formatting, please copy songs or movies or any other files to your player.
Or get help from this site by link"
http://www.sourcingmap.com/tech-support-download/document/
choosing the title read as:"mp3troubleshootroadmap.swf"
Emily
July 2007