Apparatus for transmitting radio programmes and radio relay messages; Computer hardware and computer software programs for the integration of text, audio, graphics, still images and moving pictures into an interactive delivery for multimedia applications; Computer software for use in the encryption and decryption of digital files, including audio, video, text, binary, still images, graphics and multimedia files; Computer software for use in the safeguarding of digital files, including audio, video, text, binary, still images, graphics and multimedia files; Computer software to enhance the audio-visual capabilities of multimedia applications, namely, for the integration of text, audio, graphics, still images and moving pictures; Downloadable audio files, multimedia files, text files, e-mails, written documents, audio material, video material and games featuring information in the form of downloadable short educational/training communications in the field of human resource development for the promotion of employee retention, career growth and increased productivity for employees and employers; Downloadable image file containing artwork, text, audio, video, games and Internet Web links relating to sporting and cultural activities; Downloadable multimedia file containing artwork, text, audio, video, games, and Internet Web links relating to a system and method for decoding and/or encoding a text message or instant message sent by a wireless device and transmitting audio and or video content to the recipient of the text message or instant message that may be based on key words typed into the text message; Downloadable multimedia file containing text relating to a system and method for decoding and/or encoding a text message or instant message sent by a wireless device and transmitting audio and or video content to the recipient of the text message or instant message that may be based on key words typed into the text message; Electronic advertisement and messaging display unit with multi-networking (TCP/IP) capabilities and remote connectivity; Electronic text-messaging device for use in conjunction with personal digital assistants; Instrument to facilitate text-messaging in the nature of a stylus-type device that is attached to the hand for use in conjunction with personal digital assistants; Interactive, motion sensitive electronic announcer for recording and playback of an audio message or instruction; Luminous variable/dynamic signs using light emitting diodes and electronic controllers to produce real-time and programmable messages and information displays; Microwave transmission apparatus for delivering radio programs and messages; Portable and handheld digital electronic devices for recording, organizing, transmitting, manipulating, and reviewing text, data, image, and audio files; Portable telecommunication instant messaging devices; Recordable compact disks and digital video disks with printable upper surfaces on which text or graphics can be directly printed; Software for processing images, graphics and text; Wearable digital electronic devices comprised primarily of software for a system and method for decoding and/or encoding a text message or instant message sent by a wireless device and transmitting audio and or video content to the recipient of the text message or instant message that may be based on key words typed into the text message and display screens and also featuring a bracelet; Wearable digital electronic devices comprised primarily of software for a system and method for decoding and/or encoding a text message or instant message sent by a wireless device and transmitting audio and or video content to the recipient of the text message or instant message that may be based on key words typed into the text message and display screens and also featuring a wristwatch