I meant to give you all heads up on this a few days ago, but I've been wrestling with Java implementation issues for the last few days. The live broadcast is a mix of a QuickTime and Java chat. The chat is the most problematic - and untested - of the two components, so please be gentle with it.
An unfortunate late discovery with the chat is a problem with the chat running on Mac OS 9. There seems to be a bug in the Java implementation with loading in the program, I'm trying to resolve this and will post later with news if there is any.
Under Windows XP you may need to install the Java Runtime Environment from Sun, and restart your browser if the chat doesn't appear. You can download it by going here, then scrolling down to "J2SE v 1.4.2_08 JRE" and clicking on "Download J2SE JRE" (Sorry, we can't link to the main download page).
The chat engine might also be blocked by firewalls in a corporate environemnt, or if you have a personal firewall running on your computer. It requires an outgoing TCP connection on port 5222 to be allowed through.
If problems persist either drop me an email via the contact page, or post in the forum, and I'll see what I can do to help.