Rick Kleffel produced a great NPR segement on the Singularity, interviewing both me and Vernor Vinge (author of the amazing Rainbows End) on the subject.
Regrettably, the file is only available as a Real and WMA stream, but if you happen to make and MP3 of it, dropload it to email@example.com and I'll get it hosted and linked. Got it, thanks!
Update: Here's the MP3 Link, courtesy of Eric, Alex, Darien, Ian, Jim, Michael, Mike, David, John and Dona! Thanks, folks!
Update 2: Lee's posted a torrent of the file, too.