Dissable the Limewire player in tools options>player.
Right click on a file of the type you want to play in WMP and select play with wmp, and there should be an option something like: always play with this type of player.
If this gives problems ..see Lord of te Rings's posts here:
http://www.gnutellaforums.com/showth...threadid=34465 and wait for the pictures to change. That will explain it ..although I think maybe for another player
