Application software for use by disc jockeys for fetching music data, analyzing necessary information for DJ play such as waveform, beat position, or tempo of music data, storing and managing information setting points for cue or loop reproduction on music data, and connecting such music data to players for disc jockeys; application software other than application software for use by disc jockeys for fetching music data, analyzing necessary information for DJ play such as waveform, beat position, or tempo of music data, storing and managing information setting points for cue or loop reproduction on music data, and connecting such music data to players for disc jockeys; computer programs for music data management; computer programs for downloading music files or image files; controllers for disc jockeys, namely, audio mixing controllers; consumer video game programs; electronic circuits and CD-ROMs recorded with programs for hand-held games with liquid crystal displays; metronomes; electronic circuits and CD-ROMs recorded with automatic performance programs for electronic musical instruments; electric and electronic effects units for musical instruments; downloadable music files; cinematographic film, exposed; exposed slide films; slide film mounts