The National Digital Information Infrastructure and Preservation Program has released a podcast (MP3 file) of Babak Hamidzadeh discussing the Library of Congress' digital repository.
Here's an excerpt from the announcement:
Mike Ashenfelder from the Library of Congress talks with Babak Hamidzadeh, Director of Repository Development at the Library of Congress, about the challenges of building an efficient, scalable digital repository. Hamidzadeh describes how the Library's repository works, future plans for the repository and its tools and what will be expected of IT professionals and digital librarians as their roles grow increasingly interdependent.