 Caruso made more than 260 extant recordings in America for the Victor Talking Machine Company (later RCA Victor) from 1904 to 1920, and he and his heirs earned millions of dollars in royalties from the retail sales of these records.He was also heard live from the stage of the Metropolitan Opera House in 1910, when he participated in the first public radio broadcast to be transmitted in the United States.Caruso also appeared in two motion pictures.