Computer hardware and software for processing digital music files; Computer hardware for communicating audio, video and data between computers via a global computer network, wide-area computer networks, and peer-to-peer computer networks; Computer hardware for upload, storage, retrieval, download, transmission and delivery of digital content; Computer programs for processing digital music files; Computer software for manipulating digital audio information for use in audio media applications; Computer software for processing digital music files; Digital audio players; Digital media receivers; Digital media servers; Digital media streaming devices; Digital signal processors; Electronic displays, namely, digital signage; Electronic scalers for audio and video signals; Electronic switchers for audio and video signals; Integrated circuits and integrated circuit cores for use in wireless communications and wireless communication equipment and apparati and digital signal processors (DSP); Matrix switchers for audio and video signals