Kurzweil is a proprietary format that requires the Kurzweil software package. Kurzweil allows a user to use scanned material as displayed text synchronized with a synthesized voice. To learn more, please visit the Kurzweil website.
While we can produce Kurzweil, typically PDF is provided as it is fully compatible with Kurzweil, and faster to produce. If Kurzweil is already available, however, it will be sent to you.