NO FILES. When I turn on my slicK stiK, it shows a message that there are "NO FILES" yet when I

Question

When I turn on my slicK stiK, it shows a message that there are "NO FILES" yet when I plug it into my computer to sync, it shows all my songs that are on the device. Seeing that my songs are on there, I unplug it and it still shows the message "NO FILES" and won't let me listen to any of them.