Just to clarify, it's not "fancy", it's very old-school to do video signal distribution that way nowadays. The two main options are: 1) Peer-to-peer with something like a Tivo, so you have local devices that talk to each other and transfer what they need. 2) Server-based, where everything is on the server, and you have local devices that pull what they need from the server. (or some combo of the above two) To distribute the *signal* instead of the *media* was only useful when you couldn't digitally store the media. Now, that's a non-issue, and *signal* distribution is only for those who haven't made it to the 21st century.