All four talks were excellent. It was a packed house, and the crowd was very enthusiastic about each of the four speakers. Chomsky uniquely got a raucous and sustained standing ovation.
There's a bit of laughter during Chomsky's lecture that you won't understand without video. What happens is as Chomsky is speaking a man conspicuously walks in front of him holding something like a sheet of paper. Chomsky says something like "Yeah, all right." So it was apparently someone holding a sheet indicating the time. We'd have thought FAIR was trying to hurry him along, but then Chomsky says "I authorized that." He then said something like "When my kids were young and would ask me a question they'd say 'Just a 5 minute one.'" They understand that he gets going and it's off to the races. So he apparently asked someone to warn him so he didn't go too long. It's funny because here's Chomsky at 82 and he just goes and goes. He looked great. On the right they wish he'd pass on, but it's not going to happen any time soon thankfully.
These are an apple format, so i-pods or Quicktime work. I can convert them, but there would be a bit of loss. Watch out for the applause because it's loud as contrasted to the speaking. Otherwise the sound quality is pretty good.
It looks like Glenn has linked to my audio files here, so the above links are updated to accommodate the additional bandwidth. Also commenter mubak has edited the files to improve the audio disparity during the applause and loaded all 4 talks as a single zip file which can be downloaded here.