To my chagrin, last I checked - admittedly a long time ago - I was unable to subscribe to audible because I live in Singapore. Undoubtedly due to pre-Copernican copyright issues.
After chatting with a colleague from the US the other day who was raving about audible, I thought I'd try again.
Success! I am over the moon to now be a totally addicted audible member (it seems 99% of titles are available for purchase to me - just a few that are restricted due to copyright).

It is many years since I last read and re-read Dune, and it was great to rediscover the book in audio. Still the SF classic I remember, and now I have it sitting in my audible library for another listen in the not too distant future.