Just noticed that Mary Stewart's Arthurian saga is coming to audiobooks!
The Crystal Cave just came out (
Audible,
Downpour), and
Downpour is taking preorders for
The Hollow Hills (pub date 11/22) and
The Last Enchantment (pub date 12/31). These are all unabridged, narrated by Derek Perkins.
Audible has a Whispersync deal on
The Crystal Cave: $2.99 for the audiobook if you buy the Kindle book for $4.89.