Loud speakers; horns for loudspeakers; cabinets for loudspeakers; sound reproduction apparatus; sound transmitting apparatus; microphones; audio interfaces; audio mixers; signal processors for audio speakers; digital voice signal processors; portable audio players; sound recording apparatus; sound recording carriers; telecommunications equipment; electronic data processing apparatus; electronic calculators; computer programs for processing data; computers; computer software, recorded; computer software applications, downloadable; computer programs, recorded; downloadable image files; downloadable music files; electronic publications, downloadable; audio- and video-receivers; interactive touch screen terminals; memory modules; equalizers being audio apparatus; photographic cameras; cinematographic machines and apparatus; optical apparatus and instruments; computer network servers; modems.