I have sucessfully loaded 470 MP3 songs using Jukebox, to a SanDisk 2gb card. Now that I have checked out these songs on several song lists, they no longer appear in the Check out window. When I hit List, the songs are still in the default and so are all the song lists I created. Then when I hit check out, the lists are not there. I want to make a backup copy of the 2gb disk. Is it possible?