Sound and image recording apparatus; sound and image transmission apparatus; sound and image reproduction apparatus; magnetic discs; optical discs; digital personal assistants; computer memory units; printed circuits; computers; readers of magnetic, optical and digital discs and diskettes; recorded computer programs; software for computer games; computer games and online games; computer software on mobile telephones; electronic game consoles; appliances for games intended for use with a television receiver; CD-ROMs; compact discs; cinematographic films