Just another suggestion...
I have teenagers and I HATE there Hip Hop Crap, so I just made them another Shared Folder, Labeled Kids Music. Then moved all of there stuff over to there Folder.
There is a few different ways to do this. If it is something you want to try Post back.
I also set up short cuts on the desk top for both Folders, so we can access our files without being in Limewire. Makes loading MP3 Player really simple.
Hope this helps.
You say you don't want to split the Desktop?? / shared folder?? Then Pac's advice is probably the way to go, even though you would still be splitting up the shared folder.