ASP.NET Video Starter Kit support uploading, publishing and streaming wmv videos on silverlight player.
Setup Silverlight in Video Starter Kit:
You can setup wmv video publishing and setup easily from media section of configuration page located within control panel -/ settings.
Just setup video output type to: Silverlight WMV shown in screenshot.

Once setup, every video will be publishing in wmv streaming format and will start playing on wmv silverlight player.
Note: it will not effect already published videos in other formats. They will still streaming using old configurations.
Demo Url:
http://www.remix-video.com/video/391/wmv-silverlight-video-testing.aspx
Sample screenshot