Do you mean you'll be redirected to a website called "musicmatch"??
If so, update LW to the newest version, in which this proiblem has been fixed.
You can download it from here:
http://www.limewire.com/ Those file might still come up in your search, but won't redirect you to a website (i.e. open your browser to get to that site).
You'll have to check which of the files causing the redirection and when you know, delte it (them).

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