STEPHEN LABATON, NY TIMES - The head of the Federal Communications Commission has circulated an ambitious plan to relax the decades-old media ownership rules, including repealing a rule that forbids a company to own both a newspaper and a television or radio station in the same city. Kevin J. Martin, chairman of the commission, wants to repeal the rule in the next two months - a plan that, if successful, would be a big victory for some executives of media conglomerates. . . Currently, a company can own two television stations in the larger markets only if at least one is not among the four largest stations and if there are at least eight local stations. The rules also limit the number of radio stations that a company can own to no more than eight in each of the largest markets.