None of them are available in the docs. I see embedded iframes pointing to "silverlight.services.live.com", but no video. FF shows blank, IE7 shows HTTP 500 error.
Silverlight live streaming - the MS service launched to support things like this - went offline and I need to move every single one of the screencasts I've made for SubSonic over the last 3 years.
This is going to take some time - I'll get there but it will be a few weeks.