Portable and handheld digital electronic devices for recording, organizing, transmitting, manipulating, and reviewing text, data, image, and audio files; mobile phones; cameras; personal digital assistants; portable and handheld digital electronic devices for recording, organizing, transmitting, manipulating, and reviewing audio files; laptop computers; tablet computers; interfaces and peripheral devices for computers and handheld digital devices; USB (universal serial bus) hardware; electrical cells and batteries; solar panels for the production of electricity; computer software for use in organizing, transmitting, manipulating, and reviewing audio files on portable and handheld digital electronic devices; electric connections and connectors; plug connectors; cable connectors; fiber optic connectors; magnetic connectors; power supply connectors and adaptors for use with portable electronic devices; computer software and firmware for operating the foregoing devices; hardware development kits for the foregoing devices comprised of connectors and electronics components; software development kits comprised of software components for developing software for controlling the foregoing devices, including code, binaries, drivers, and instructions