Just an interesting finding worth considering. We had been doing a streaming broadcast with VLC and that had its problems-freezing, kicked off, etc.. Now we have found UStream and do our classes online. I did this orginally for some of my remote students in other cities and it seems to work well. Students can watch from home or grandparents can watch kids classes. Our camera is not as wide as we'd like but it shows the main instruction area when I'm teaching and people practicing-just cuts off the ends.
I now broadcast all my classes unless UStream has a problem. It works nicely with good picture quality and I think you can have up to 45 viewers.