MP3s of lectures about wikipedia:

Mitch Kapor, "Thirteen Ways to Look at the Wikipedia".

There's really a Zen koan aspect to it; when you're given a paradox to wrestle with you can either go down with it -- because it's insoluble on its own terms -- or you can transcend the paradox because you find out you've had some limiting assumptions that you didn't know you had and it's only an apparent paradox. So, this talk is my effort to recount how I've wrestled with some of the paradoxes of Wikipedia and share that with you.

Jimmy Wales (Untitled, as far as I can tell).

I think, partly because of the personality types who become programmers... I don't know what it is exactly... a lot of programmers, seem to me to think that the whole point of social software is to replace the social with the software. Which is not really what you want to do, right? Social Software should exist to empower us to be human... to interact... in all the normal ways that humans do.