That's because it really
is called The Philosopher's Stone!
I like audio-books very much, if they are well read. I wouldn't call it "reading", but if you listen attentively, I think the impression can be just as intense as if you'd really read it yourself.
Of course, instead of your own voice (in your own mind) you get the voice and interpretation of the reader. But an audio can stick in your mind very much, maybe even more than reading it yourself, especially if you listen to a bigger chunk of text than you'd read at one go.
Hard to explain maybe, so here's an example: I listened to an audio of a book by Thomas Mann once - I'm pretty sure that if I had read the book I would have been pretty slow, as it was a rather abstract text ("Joseph and his brothers", part I), but the audio was excellent, and as I was listening to it while knitting a pullover, I would listen to about an hour's reading at a time - I'm sure I would have tired of reading much earlier.
Ever since I discovered the Internet though I've been doing much less needlework and consequently much less listening. Or reading for that matter.