Download Media coder from http(colon)//mediacoder(dot)sourceforge(dot)net/
install it download its additional codecs and install it too.
Then make link to MPUI (MediaPlayerUserInterface), which should be located under"C:\Program Files\MediaCoder\codecs\MPUI.exe" or if You had installed it elsewhere then in (path)/(my media coder dir)/codecs/MPUI.exe.
The last step is not necessary, but You might run player directly without running transcoding UI.