If you're going to download VLC Media Player you Don't need to download another Codec Pack. Once it's downloaded you will need to make VLC your Default Player. Then when you open the files it will open in VLC.
To change the default player to VLC...These instructions are for XP.

While in Limewire go to Library. Now click Explore, in lower left corner. This will take you to your saved/shared folder outside of Limewire. Now Right click any file. Highlight Open With. Now go to choose VLC and click Always use Program to open.... and click OK.

__________________
I Don't Suffer From Insanity, I Enjoy Every Minute of it