I went to the link and clicked Play. All started just fine, but the audio was too low to hear comfortably. I checked to be sure both my speaker and the video speaker were on max. Other than that, I have no idea how to fix it :) I do hear other videos without a problem.
Drat, it's no go. I tried again, double-checked the volume controls, and refreshed the screen. Beginning crowd noise is loud, but Dr. Brownstein is very, very soft. It's probably my silly computer. It did this another time with a video link posted here that everybody else could hear just fine, and I couldn't. Thanks for the help, CS!