The Design and Implementation of a Media on Demand System for WWW Anders Klemets Department of Teleinformatics The Royal Institute of Technology, Sweden Abstract Current WWW clients do not directly support synchronized playback of continuos media. It is however possible to support continous media by using external programs that are controlled by the WWW client. This paper describes the design and implementation of a "Media on Demand" server which uses WWW as its user interface. Offered media include audio and video recordings of transmissions on the Internet Multicast backbone (MBONE), as well as arbitrary prerecorded audio files.