If robotic voices are considered performance then I do believe in the possibility that many AI are existing among us under a humanlike skin. Seriously, the lawsuit between the Amazon Kindle 2 and The Author's Guild is riddonkulus. The audio reading that the new Kindle 2 offers is in no way infringing on a market. If a person wants a book read to them they are not going to seek out one of those horrible monotone computer voices. Anyone wishing to be entertained will gladly dish out the extra bucks for the author's audio version.
I think what Kindle 2 has to offer is fantastic. I've always had an issue with disabled people having to shell out more money because they need special accommodations in life. What Kindle 2 has incorporated into the base price of an ebook is simply humane. Through the audio feature it is now possible for blind people to have a book for the same price as seeing people. It makes it more affordable for many disabled populations to enjoy books at a fair price.