I think that kfgo.com has not been streaming the games this year. I know they had dead air on their streaming site a couple weeks back and a friend said that they were playing a disclaimer or something last night. May be a licensing issue???
Anyway, to be able to get the broadcasts at www.fightingsioux.com, you have to first register for a free subscription. This is good for one calendar year. I had trouble getting the webcast to work last night, then thought to check my subscriptions and had to renew, after which it worked great.