I work for Coby technical support. Our customer service phone number is 1-800-727-3592.
I'd like you to try something so that we can see if there is something wrong with your player. First, I'd like you to format your player. This will wipe it clean of any files that are on it. To format, follow these steps:
Connect the unit to your computer
via the USB port.
Double-click the My Computer icon on your desktop
, or, click your start button and choose My computer from the right side of the start menu.
Right-click the icon for the Coby player.
Choose Format from the menu that appears, and choose quick format after that.
You'll see a warning that formatting will erase all data on the drive. Click OK.
After this has been done, go to the MY MUSIC folder that is found by clicking MY DOCUMENTS on the start menu. Open the folder labeled sample music and copy and paste one of those songs into the player. Then disconnect the player and see if that one song will play.
If you're able to load a sample song as described above and it doesn't play on the player, unfortunately this would mean the unit is defective and needs to be replaced. It can not be fixed. The warranty is 90 days from the date of purchase. You will need a receipt for warranty exchange.
If you feel this solution doesn't deserve a good rating, please let me know why so that I may better assist you. If there is anything more I can do to help, I will!