Abstract: A system for the management of media data and binding of media data to requests for pieces of media, which includes a plurality of procedures that can establish and write storage of new media, and make requests for media based on media source identification and range on the specified media source. A system for the management of relational information between media sources, which includes a plurality of procedures to set and query the information. Relations are established either via interaction with the sources or by user's specifications. Relations are based on positions in the source, labels on these positions and ranges from the labels indicating the length of the relation. Information concerning source relations, actual media stored for these sources, and binding of media to specific needs for the media within the system are separated. Media data is identified source identifiers and range specification on the source.