In this video I am on the phone to a colleague approximately 20 miles away. He activates 'Violins' from his desktop computer and I activate 'Voices' in a powerpoint projection. Note the handprints that appear in the projection. These indicate where the hidden hotspots are located. Each user sees and hears what the other activates. When we activate the hotspots simultaneously, both violins and choral voices are heard together.
The file size is quite large so please be patient while the video downloads.