I was interviewed recently at http://www.allenstafford.com/podcast/.

Interview with Rick Macklem about his work with NFSv4.
More information at http://snowhite.cis.uoguelph.ca/nfsv4/.

File info: 13Min, 6MB.

Ogg Link (fixed):
https://archive.org/download/bsdtalk116/bsdtalk116.ogg