Seeing the timeline of the transcript was interesting. He (Andrew) segmented the entire transcript into five minute segments, and then they start filling in. At first, I thought he was doing it all himself, but it seems like the whole point of segmenting it is so a lot of different people can do the transcription in parallel. So either he farmed it out to Amazon Turk, or he's got lots of college student friends.
And the transcript here: http://mixergy.etherpad.com/12