I've found some other references to webcasts, but without details, so I will keep my eye on them. Here's what I've found:
2009 Heroes Red, White and Blue Ball - trying to webcast it - looking for sponsor - will be webcast on Pentagon Channel, but not enough information to tell if this will be live
Radio One - link to a live broadcast and "watch it here," but no details
HBO We are One special - Concert on January 18 in DC - found a reference that they would like to webcast it, but have not found any details - that would be great though, since Bruce Springsteen will be there!!
Anyways, I'm still on the lookout!
Also, it has gotten very busy with confirmation hearings this week. I had links to 5 live hearings earlier today, but unfortunately, CNN Live interrupted coverage of one to show a press conference instead. Anyways, there are four going on now, including Hillary Clinton!