Artwork Trouble on Sansa Clip Zip

Hi - Thanks for the help.  Now I’m having trouble with the artwork on my husband’s Clip Zip.  I’m going to fiddle around with it and see what I can do.  I’ve downloaded that program that you mentioned but don’t have a clue how to use it.  I did switch his player to MSC mode so I’m hoping that the artwork being visible has something to do with the switch (like I might need to reformat and put the songs on again).  This time it’s the songs ripped from the Zune player that are having a problem.  Thanks again.