9 audio apparatus and audio software for converting signals and audio formats, blank digital and analog audio media, namely, compact discs, audio cassettes, and television video storage tapes; audio apparatus and electronic equipment for converting signals and audio formats, namely, analog/digital and digital/analog converters, digital format converters, digital I/O devices, digital signal processors (DSP), microphone preamplifiers and audio filters; analog and digital processing equipment; audio apparatus for converting signals and audio formats, audio cables, namely, analog/digital interconnect cables for interfacing audio equipment