VLC Media Player

Looking for a media player that can play all files? Here's your answer... yah, its VLC media player. We normally use windows media player, but you would need to install separate codecs to play files like DIVX, MOV,MP4 etc. But just install VLC and you can play almost all files and it's light weight won't take much time to download and the best thing -- its free.

http://www.videolan.org/vlc/