Silverlight

http://blogs.msdn.com/b/silverlight_sdk/archive/2009/05/04/silverlight-video-player-source-code.aspx

http://silverlightru.net/tag/video

http://blogs.msdn.com/b/mikcher/archive/2009/06/13/open-video-player-silverlight.aspx

http://silverlightru.net/prostoj-mediaplayer

http://slvideoplayer.codeplex.com/