MediaNews CEO Dean Singleton, who is buying the Mercury News and three other Knight Ridder dailies, has often expressed his intention to add TV and radio stations to his portfolio in markets where he has newspapers, according to column printed today (July 4) in Singleton’s Denver Post by Joanne Ostrow. Ostrow says Singleton may soon get his wish. The FCC is revisiting its media ownership rules, which now prohibit one company from owning both a TV station and newspaper in the same city. Ostrow points out that the Internet has changed everything since the FCC imposed the ownership ban in 1975.