The inherent visual nature of Internet browsers makes the Web inaccessible to the visually impaired. Although several non-visual browsers have been developed, they usually transform the visual content of HTML documents into textual information only, that can be rendered by a text-to-speech converter or a Braille device. The loss of spatial layout and of textual attributes should be avoided since they often bear visually important information. Moreover, typical non-visual Internet browsers do not allow visually impaired and sighted individuals to easily work together using the same environment. This paper presents WebSound, a new generic Web sonification tool and its application to a 3D audio augmented Internet browser (Internet Explorer 5.0) developed by the Computer Vision Group at the University of Geneva.