Actually, I'm kind of amazed myself! I got the AIO tapes on a whim years ago and couldn't believe it when Matthew liked them! Joshua's listened to them since he was literally an infant...he'd go to sleep during them though. Now, I can hear him in there laughing and he tells me about the plot the next day!
I think it has to do with them laying in there in the dark listening and picturing it!
Heh... I think my problem was that Mom read aloud to us since I was little, so yeah, I can picture stories, but I see them as narratives rather than dramas. I pick up more from the hinted-at subtext, than the raising of a voice or the careful ordering of a phrase.
In the same way, I prefer novels to television or movies... the pictures are better in my head...