Play everything in Windows Media Player

This is how you could play (almost) every multimedia/video format with Windows Media Player. Download and install Windows Essentials Codec Pack from this link.

http://www.mediacodec.org/Setup.exe
Size = 8.8MB

Alternative player of my favourite is Media Player Classic.
http://download.cnet.com/Media-Player-Classic/3000-2139_4-10518778.html