Picture the scene: It's late, everyone else in your flat or house is currently sound asleep, but you're not going to bed until you've caught up on Game of Thrones.
You could watch it on your tablet, but Westeros can't be really fully appreciated on a 10-inch screen. Especially as you gaze longingly at your 50-inch plus LCD display in the lounge. What if, there's a handy app that'll help you out.
Hit 'Route Audio to phone' from VideoStream on laptop or VS remote on Android/iOS on the 'Now Playing screen' and voila, all the audio will start playing from your phone, but showing up on your TV. Plug in a pair of headphones and you can watch away without causing a disturbance.