Thank you to steelyglint from the Basenotes forum for finding this link to a 30 minute documentary on the perfume school in Versailles. You will need to
click on the link (link expired, sorry!) under "Nose School". I haven't had time to listen to it yet, let me know if you enjoy it!
And while searching around the web last weekend for information on Demeter, I came across a link to this radio show on fragrance which was aired last year on Studio 360. Chandler Burr joins the regular show and among other things, they discuss the Demeter line and the use of smell in Thomas Mann's Death in Venice. I listened to it shortly after it aired, but it was worth a repeat.
An older, shorter, but still interesting radio interview: this 2002 piece from National Public Radio in which Susan Stamberg talks to Jean-Paul Guerlain about his retirement from the company that had been run by his family for five generations.