Audible.com files are SO MUCH smaller than the what I ended up with when I copied the CD version to my computer. It was also a pain, as I had to pretend the book was actually music. Then, Audible's software wouldn't reconize my MP3 player until I removed all the CD files.
Oh well. Just means I am more likely to use Audible.com. Faster. Cheaper if I don't want too many new books at a time. And considerably less space than the CDs.
But, no, my dears, it won't replace physical books. Now, those awesome (and very expensive) little digital 'book' readers, that you load text data to? Oh my. THOSE might just replace the physical books. Oh, yes. But not today, nor tomorrow. But soon, I think. Soon.