American newspapers have faced competition from new media for over ninety years. Today digital media challenge the printed word. In the 1920s, broadcast radio was the threatening upstart. At the time, newspaper publishers of all sizes turned threat into opportunity by establishing their own stations. Many, such as the Chicago Tribune's WGN, are still in operation. By 1940 newspapers owned 30 percent of America's radio stations. This new type of enterprise, the multimedia corporation, troubled those who feared its power to control the flow of news and information. In Sound...