YACAST has developed its own unique technology which enables it to offer media companies an efficient and profitable model to stream data on the internet. This allows terrestrial radio stations to add related information to their audio programmes. Such related data can be music related (CD cover pictures and images), commercial (banners associated with the commercials on the air, automatic insert and deletion of commercials) and hypertext links to stations' online services. The french radio stations currently using YACAST's services represent over 70% of the terrestrial radio audience. YACAST offers a new and interactive dimension to traditional media, providing substantial added value.