As long as your files are playing in the player you wish them to play in, you have no problem. The skin causing this .. posssibly not sure...
I understand the problem you have can be solved by deleteing your preference folder (which will require you to re-configure Limewire and may loose any long outstanding incomplete files)
This link will help if you choose to do that:-
http://www.gnutellaforums.com/showth...=fixes+working