The only thing I can think of, regarding the post just before this one,
is audiobook recordings of
"A Swiftly Tilting Planet" by Madeleine L'Engle.
Many of Mrs. L'Engle's fantasy books are in Audible Audio Edition from Listening Library. The reader is Jennifer Ehle.
What I just specified is the digital download format I think.
The same recording, with the same reader, is for sale as an Audio CD as well.
There also exists an audiocassette recording, and Madeleine L'Engle herself reads the book on that one. Word of warning: Some people DESPISE the sound of L'Engle reading her books. She is no professional reader. The people who dislike her readings, complain of two things: the emotions are overdone; her voice quality has a ragged edge that the listener found harsh. I've never heard these myself.