Yup, it's a repost, but I'm okay with it because the MP3 is now available (came out Sunday @ 7pm). Take note, it's only available for free this week. After that, I think you can find it on iTunes or Amazon for a buck or three.

Yikes, sorry about that. My search for "npr patents" only brought up a mention in a comment.

I'm glad you re-posted, actually, since the original links (when posted) didn't include audio.