By detecting the broadcast frequency of a musical composition in radio broadcasting based on on-air information and now-on-air information being broadcast contents information, the broadcast frequency of each musical composition can be displayed on a display 26 without receiving and outputting radio broadcasting. Thereby, the user can recognize that which musical composition is frequently broadcasted. Thus, even if the user does not listen to the musical composition broadcasted in the radio broadcasting, the broadcast frequency of the musical composition can be shown to the above user.