This work examines the scope of authors' rights in relation to the exploitation of their works by broadcasting, whether terrestrial or by satellite, cabling or over computer networks, in three important jurisdictions and under relevant international conventions. The analysis traces the gradual expansion of the various exclusive rights granted by copyright law in response to technological developments and puts them in their modern context, focusing on the overarching right of public performance or communication. The author argues that the advent of modern technologies, which recognize no national boundaries, necessitate the adoption of an internationally harmonized concept of "communication to the public" as the primary right applicable to the dissemination of copyright works in non-material form.