What Napster is doing is in defiance of that law which carries a fine and, in some cases, a jail sentence. Napster is supplying burglar tools to a public that is not aware of the circumstances. That same public, if it can not afford a car or a home, knows it can not have them. They can not download that car or home. That would be theft if it were technically feasible.
Intellectual property is entitled by law to the same measure of protection.
See the trailers before you see the movie. The price of Internet freedom Chinese dissidents thought of Yang Zili as a Web handyman. The government saw him as a threat. Mystic simulacrum Exile, the sequel to Myst and Riven, is beautiful eye candy, but not quite art.