Music reproduction apparatus, image reproduction apparatus, television receivers, navigation apparatus, audio and video receivers, communication apparatus for vehicles, portable communication apparatus, satellite navigational apparatus, digital cameras, WIBRO (Wireless Broadband Internet), communication terminals, telematics terminals, navigation apparatus for vehicles, computer software (recorded), computer programs (recorded), computer operation programs (recorded), computer programs (downloadable software), MP3 players, portable GPS receivers, GPS receivers for vehicles, sound recording apparatus, transmitters (telecommunications), satellite television broadcasting receivers, recording and reproducing apparatus, DMB (Digital Multimedia Broadcasting) receivers, video recorders, personal video recording apparatus, electronic music (downloadable), PMP (Portable Media Player), electronic agendas, sound recording apparatus, sound reproduction apparatus, telephone apparatus, radio transmitters, radio receivers, navigation terminals, PDA