Silverlight? Are these people serious? Whether you are an educational institution or a for-profit media company, you are trying to get to the largest number of people and cause them the fewest problems. Silverlight fails spectacularly at both those objectives.

Edit: I know there seems to be a flash player component as well, but it's failing for me and can't get to the .mp4. Which doesn't speak well of the joker who cobbled the site together either.