Penguin Audiobooks, New York, 1998.  ISBN 0-14-086888-7.  2 audio cassette tapes with approx. playing time of 3 hours; still in manufacturer’s shrink wrap.  Read by Alan Sklar.  ‘Imagine a world where the difference between man and machine blurs, where the line between humanity and technology fades, and where the soul and the silicon chip unite.  This is not science fiction.  This is the twenty-first century according to Ray Kurzweil, inventor of the most innovative and compelling technology of our era.  In The Age of Spiritual Machines, the brains behind the Kurzweil Reading Machine, the Kurzweil synthesizer, advanced speech recognition and other technologies devises a frame-work for envisioning the next century.  Kurzweil guides us through the inexorable advances that will result in computers exceeding the memory capacity and computational ability of the human brain.  The Age of Spiritual Machines is no mere list of predictions, but a prophetic blueprint for the future.’ (from rear box)