Internet and digital media have profoundly reorganised the radio landscape by giving birth to new formats and patterns of radio listening. Today, traditional radio actors systematically use online platforms to diffuse their programs and communicate with their audience. This master thesis offers a case study and examines how Radio FIP, a French music station of public service, uses its digital devices to diffuse its program and produce content online. On the basis of existing researches on radio and radio diffusion online, and with the help of the concepts of format, media logics and hybrid media system, the author of this paper defines two logics of traditional radio and radio online used as reference in order to analysis the influence of m...