What's the date on it?
I only ask because every public space in the entire world that has a zoned PA system capable of playing muzak does that.
Which is every cruise liner and theme park, most museums, railway stations, airports...
Heck, chances are reasonably good that Sonos' own office block has one.
Disneyworld and Disneyland have been doing this using "microprocessors" since the 80s, if not earlier.
Biting the hand that feeds IT
