Electrical apparatus for recording, transmission and replay of sound and picture, namely CD machines, DVD machines, digital video recorders, video tape recorders; disk drives for CD-ROM, CD-R, CD-RW, DVD-RAM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-ROM, DVD-Audio, DVD-Video, Mini-DVD, PhotoCD, Audio CD, Super Audio CD, Video CD, Super Video CD, Extended Video CD, CD Interactive; electrical apparatus for communication and for digital and audiovisual signal transmission, namely wireless phones, modems, and radio telephones; Computers and computer networks including master computers, slave computers, servers, client computers and parts therefor including software; data input and output equipment, namely computer printers, plotters, graphic cards and computer graphic software, computer keyboards; electronic storage units, namely buffers, electrical cables, wires; disk drives for computers, namely for copying and burning of CD-R, CD-RW, DVD-Discs, DVD; machine readable data carriers, namely blank magnetic tapes, DAT-tapes, magnetic tape cassettes and computer storage disks, blank compact disks, blank hard computer disks, removable hard disks for computers, optical storage disks, namely CD-ROM, CD-R, CD-RW, DVD-RAM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-ROM, DVD-Audio, DVD-Video, Mini-DVD, PhotoCD, Audio CD, Super Audio CD, Video CD, SuperVideo CD, Extended Video CD, CD Interactive; computer programs to copy, erase, administer, compress, decompress and restore data, computer programs to copy, erase, administer, compress, decompress and restore data, computer programs to read, explain and erase readable and inscribable data carriers, namely, overwriteable compact disks, magnetic disks and hard drives, computer programs to make CD recordings and DVD recordings, computer programs to prepare mechanical data carriers, namely, formatting mechanical data carriers for inscribing data and software