The "Unlock" Tap: The button will start out Gray and say "TAP ME." You must click it once to give the browser permission to play the sound.
Go Green: Once you tap it, the button will turn Green and say "PING." This means your audio is live!
Alert the World: Every time you tap the green button, everyone else who has the page open will:
Hear the Ping sound instantly.
See their screen Flash Green.
Watch the Total Pings counter go up.
Stay Connected: Keep the tab open in the background! As long as you did the "First Tap," you will hear pings from your friends even if you are looking at another website.