Sean Alexander, Senior Silverlight guy (Director) at Microsoft has posted a top 10 things you to know around Silverlight and Media.
eg:
Top 10 Questions About Silverlight and Media What media formats do you support?A: WMV7,8, 9/SMPTE VC-1, WMA, MP3 What is SMPTE VC-1?A: WMV9 - now an open standard recognzied by the Society of Motion Picture and Television Engineers (SMPTE) and shipping in all Blu-Ray and HD-DVD drives. Will Silverlight work with my current Windows Media?A: Yes, it most definitely will work with your existing Windows Media What do I have to do to add Silverlight to my site? For Mac and Windows playback?A: Once the beta ships in two weeks, all you'll have to do is drop a little .js and XML into your page and away you go. Can additional formats be added for playback?A: No, part of the appeal of Silverlight is the small package size- 1MB, includes everything it needs for video and audio, animation, graphics and AJAX-based programmability to boot!
Top 10 Questions About Silverlight and Media
More over at Sean's blog...