The case with Silverlight it is a bit different than with usual embedded links regarding Windows Media Player, for example, because the way that Silverlight works is also different. The content is used across domain storage and the links are usually defined in iframes. Also the links use an API with a key from the official Silverlight server which in this case is not accessible by 3rd party applications and such a simple View Page source will not show you the actual URL of the stream, instead you will see a link to a manifest which defines the iframes.
