Nuanti, a company that develops Web browsing technologies, has produced
a high-performance Ogg Theora decoder for Microsoft's Silverlight browser plugin. Nuanti's Highgate Media Suite will enable support for standards-based HTML5 video streaming with Theora in browsers that have Silverlight. It works entirely without requiring the users to install any additional software.
http://arstechnica.com/open-source/n...ilverlight.ars