Okay, so it's not exactly Stuxnet subtle, but this is still pretty cool. But there are some catches.
First, the venue has to be participating a social music called, yes, Secret DJ, a marketing app that allows the bar/restaurant/pub to keep in touch with its best customers and regulars
It allows the venue to push out all kinds of information about what's going on, including what song happens to be playing at that second. According to the makers, 2,000 establishments are part of the community so far.
If you have the app running on your Android or iOS phone, you can make requests. Submit even requests and you can take control of the music selection as the Secret DJ. And from what I can tell, you don't even have to be physically present at a particular place to take control of things.
Kinda cool, no? More at The Telegraph.