How to play while charging?

Is there a way to play songs while the Clip is connected and being charged to a computer?  Seems like everytime I plug it in, it just reverts to the screen displaying “connected” and none of the buttons function.  Same thing when tried on a PC also and a DVD player with a USB drive.

Any help is appreciated, Thanks. 

Is there a way to play music on the Sansa through Windows Media Player?  I have all my music in the music folder but my only option in Windows Media Player seems to be to add more music, it doesn’t show the music that is already on it.