True, you can already get software that will read aloud whatever is on your computer. But Kindle 2 is being sold specifically as a new, improved, multimedia version of books — every title is an e-book and an audio book rolled into one. And whereas e-books have yet to win mainstream enthusiasm, audio books are a billion-dollar market, and growing. Audio rights are not generally packaged with e-book rights. They are more valuable than e-book rights. Income from audio books helps not inconsiderably to keep authors, and publishers, afloat. You may be thinking that no automated read-aloud function can compete with the dulcet resonance of Jim Dale reading "Harry Potter" or of authors, ahem, reading themselves. But the voices of Kindle 2 are quite listenable.
An audio book, read by someone who's good at it, is an audio book, an experience that's different to, sometimes complementary to, the words on the page. A computer reading to you is a computer reading to you. And at the point where they can read books to us as well as we can read them aloud to each other, we will have other things to worry about.