8GB Clip Zip. Ubuntu 11.04. Dragged and dropped music files from computer music folder into music folder on Clip Zip. Removed Clip Zip from USB connection. New music on CZ does not appear but music that shipped with the CZ does appear. Music that shipped with the CZ no longer appears on the computer when the CZ is hooked to the computer through the USB connection. The only music the CZ plays is the music included with the new CZ. Procedure to make the CZ recognize the new music? Thank you all for your help in getting me this far!