Yes, aw that would have been an interesting game, i suck at speed chess. By the time I saw the game had been accepted it was over, I thought there was a sound notification on the pervious blitz site they had here.
@Trev33 I believe the limitation was that when a web page redirects to another, the browser will not play a sound until there has been a user interaction with that page. (To stop spammy sites abusing it).
I'm sure I can find a workaround, but that is the case now anyway.