Abstract: A webcasting system for multicasting various multimedia contents through plurality of channels in real time by employing a ground-way technology includes a plurality of broadcasting stations for providing multimedia services, a combiner connected to the broadcasting stations for combining the multimedia services, a web server 300 connected to the combiner and a public network for communicating with the combiner and receiving subscription for the multimedia services, at least one local multicasting station connected to the combiner for receiving combined data stream from the combiner, a plurality of user terminals connected to the web server via public network.