applications were very basic, offering little interactivity. Logically, text and images were adopted for building Web 1.0, transporting objects at that time of a typical size of a few kilobytes. Improvements in network performance and browser capabilities finally brought audio and video into the Internet landscape, and though movies were naturally integrated in this already "visual" environment, live interactive audio still struggles to find its place on the web for the two major reasons which we discuss below.First, the applicative model of the current Internet, which we can call Web 2.0, is historically based on visual interactions: text, images, and videos.