Abstract: A viewer for displaying an electronic book and providing for electronic commerce. In conjunction with viewing an electronic book, a user can view information about products and services, view an on-line electronic catalog, and receive samples of products available for purchase. By entering a purchase request, the user can purchase products or services. In the case of a digital product, the user can download the purchased product directly into the viewer. The viewer also records statistics concerning purchase and information requests in order to recommend related products or services, or for directing particular types of advertisements to the user.

Abstract: A method and system for providing text-to-audio conversion of an electronic book displayed on a viewer. A user selects a portion of displayed text and converts it into audio. The text-to-audio conversion may be performed via a header file and pre-recorded audio for each electronic book, via text-to-speech conversion, or other available means. The user may select manual or automatic text-to audio conversion. The automatic text-to-audio conversion may be performed by automatically turning the pages of the electronic book or by the user manually turning the pages. The user may also select to convert the entire electronic book, or portions of it, into audio. The user may also select an option to receive an audio definition of a particular word in the electronic book. The present invention allows a user to control the system by selecting options from a screen or by entering voice commands.