Fly around the Spanish coastal city of San Sebastián in Dinther Product Design's Google Earth experiment, and the accompanying audio shifts to match where you are.
Out at sea you can hear the crashing of the waves, but as you move closer to shore the barge noises become louder. Continue zooming in and crates are being unloaded. When you find yourself on the seaside street, you can hear the chatter in a restaurant. To one side, the sounds of a helicopter's whirring blades get louder, pan the other way and a street performer plays an accordion. The sounds even seem to adjust to the side of the camera facing them. When the restaurant is to your right, the sounds in that ear are louder.
[via O'Reilly Radar.]