Quote: but then it tells which program to use so from there i click on the WINDOWS MEDIA PLAYER and then i can view the file.

At the bottom of that box. You will see a box you can check. That box when checked will always use that player for that type of file.

LimeWire isn't a video player. It uses one that is installed on your system, but If you don't associate the player to a particular file type. LimeWire doesn't know which one to use, so does nothing.

Just another thought.