This software is a completely freeware, free to download and use, currently only supports the basic playback functions, it should be able to play most MKV video files. Of course, if you have any questions, please contact by e-mail, thanks.
This software includes a mplayer (www.mplayerhq.hu, license is GPL) as standalone player. The mplayer and mencoder binary is revision 33216, come from MPlayer for Win32 Sourceforge project (sourceforge.net/projects/mplayer-win32).