I had the same issue. I'm not sure if it was my internet connection or the stream, but I got a whole lot of "buffering". I eventually gave up on it, there will probably be a recording you can watch later.
I guess this is a no show!! Too bad, I was looking forward to hearing him speak.
EDIT: I can see them but can't hear them. Anyone else in the same boat? Anyone know how we can hear him too?