The high-tech vanguard of entertainment consumers who initiated a global music-swapping spree with the help of Napster a little over two years ago is branching out into television shows and movies. Napster's service was limited to music, and it was shut down last year after a federal judge found it liable for contributing to copyright infringement. But Morpheus enables users to trade files of any kind, and an increasing number of them are filled with copyrighted video entertainment.

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