Try downloading these codecs
http://www.xpcodecpack.com/....
Then you need to make WMP your default player...
Go to your shared folder outside of limewire (to find this click on one of your files in your LW library and click on explore)
Once you have your Shared folder...
Right click on one of your files
select open with
select choose program
select WMP
and tick the box that says always use this program for this file type...
Click ok...