Hi Erik,
Miro uses RSS feeds as "Channels" but it keeps them hidden from its user interface. You can get direct links to the video file itself but that's of no help.
The issue of links isn't a huge one but it's entirely possible that some would add the "Channel9" channel in Miro without even knowing that the videos came from this site.
It could be a good idea to at least include a link to the site itself or -better- have a short URL displayed at the beginning of each video to go back to its original post for the video. The rationale for this would be to allow people who download and share videos with their colleagues to easily find out where they comes from.
I often download videos on particular topics and watch them later, or re-watch them after a while, but it's sometimes hard to find the original post for them.
It's more of a usability thing than anything else really, especially if you want people to go back to the site for more.
Anyway, it was just a thought.
Thanks a lot for all the work being done here.