Originally Posted by AlphaWolf_HK
Well, WMP won't handle xvid, divx, mov, rm, MPEG-2 transport streams, and a bunch of others. VLC will though. Not only that but VLC doesn't require you to install codecs for anything. It has its own internal support for tons of compression formats and containers. For that reason, VLC has much cleaner playback than just about anything.
That and you can set it as your default media player (which I have).
It's pretty easy