If you still have the Clip, you may try a few things if you wish:
First format the Clip: this will erase your music on it, if you have all your music on your computer you can copy the music back on after. To Format click the small menu button, up or down click till you find Settings, click Select (middle button), then up/down till you find Format then select or right click then select Yes.
In addition to this, I would recommend you update the firmware or reinstall it. There is a Firmware post at the top of this forum that explains how.
Reload some music after all is done. And see if it is works any better. If you have a warranty with BestBuy there service guys should be able to get you a working one.
Good Luck
