How can I fix my MP3 player, IMP 65, IItronics?

For Some reason my mp3 player refuses to let me add or delete or move songs. It even refuses to let me add a new folder. Every time I try to It keeps coming up with the message saying "The disk is write protected. Remove the write protection or use another disk" I've removed the minor writeprotection on my songs and the mp3 player has no write protection on it whatsoever. What can I do?