Tangentially related: there is a cool app called Tunity that "shazams" a muted TV, e.g. at a bar, finds the game and lets you play the audio from your phone - syncing it perfectly to the video picture that you shazamed. So you can sit at a bar or waiting room or somewhere with muted TVs, and listen to the audio of the game.
That's a great idea. I've always wanted to create an app that would pretty much do exactly that, except for doing outdoor guerilla movies (kind of like a renegade drive in movie theatre). As to not annoy neighbours, you'd listen to a stream of the audio on your phone with headphones. It would be pretty easy to setup a stream, but because of differences in phones and network latency there'd have to be client-side syncing.
