9 network interface transceiver circuits and network interface software, all for use in audio and video players, audio amplifiers, displays, drives for data storage and retrieval, telephones, facsimile and data communication terminals and electronic navigational aids; integrated circuits, computer hardware and software for use in performing or supporting the standardization, design, manufacture, programming and testing of audio and video players, audio amplifiers, displays, drives for data storage and retrieval, telephones, facsimile and data communication terminals and electronic navigational aids having network interfaces