file type not showing

when i do a search in any category, the icons of the file type used to come up, but now, the file type icons only come up as the built in ones in limewire. I was wondering if there was a way to get wmv and mpg's to show as the little windows media player icon. Or a rar or a zip with that stack of books instead of just the little white window. Is there an option that will make the real icons come up???