First night of the season; I tried tuning into the first games to see which internet broadcasts are active.  I don't know about Niagara (I was too late for the first game).

The Air Force Academy doesn't stream their hockey games. Miami and Bowling Green both do. At least they did last year.
This year, they're both part of a paid subscription service.

I fear that most of the teams that used to be on Broadcast.com
(aka sports.yahoo.com) are now part of this service.

Boy, remember the good old days when the internet was free.....