Radiophonic information includes three types of materials: music recordings, non-music recordings, and written material. Considering the qualitative rather than quantitative aspects of the extent to which different types of programs use them, the user needs range from the most general to the most specialized content. RNE, the Spanish national radio network, serves as a case study of the relationship between radiophonic information and documentation. The center for radio documentation, at the service of professional needs, plans the document chain based on typology and then addresses the need to respond to general as well as specialized queries. All of this occurs within the framework of new digital technologies that affect broadcasting as well as handling and preservation of information.