Information & Design is a usability and user experience company based in Melbourne, Australia. Its web site offers a fine list of User Experience Podcasts, which includes a few on accessibility, including the following:
- Web content accessibility guidelines V2.0 – an interview with Shawn Henry
- Accessibility: an interview with Dr. Sofia Celic
- Web accessibility guidelines: an interview with Gian Sampson-Wild
PS:
There are also interviews with Steve Krug, Jakob Nielsen, and Luke Wroblewski.