They are read by children's radio host Chrissi Hart for her Readings from Under the Grapevine podcast. She has a pleasant British accent which is appropriate for the Narnia series and the audio books are well recorded. Download this classic collection of children's literature including all 7 books: The Lion, the Witch, and the Wardrobe; Prince Caspian; The Voyage of the Dawn Treader; The Silver Chair; The Horse and His Boy; The Magician's Nephew; The Last Battle. Amazing!
Note: You have to scroll down the podcast feed a ways to access these audio books on the podcast feed.