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Glossary
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.. glossary::

    backend
        A part of Mopidy providing music library, playlist storage and/or
        playback capability to the :term:`core`. Mopidy has a backend for each
        music store or music service it supports. See :ref:`backend-api` for
        details.

    core
        The part of Mopidy that makes multiple frontends capable of using
        multiple backends. The core module is also the owner of the
        :term:`tracklist`. To use the core module, see :ref:`core-api`.

    extension
        A Python package that can extend Mopidy with one or more
        :term:`backends <backend>`, :term:`frontends <frontend>`, or GStreamer
        elements like :term:`mixers <mixer>`. See :ref:`ext` for a list of
        existing extensions and :ref:`extensiondev` for how to make a new
        extension.

    frontend
        A part of Mopidy *using* the :term:`core` API. Existing frontends
        include the :ref:`MPD server <ext-mpd>`, the MPRIS/D-Bus integration,
        the Last.fm scrobbler, and the :ref:`HTTP server <ext-http>` with
        JavaScript API. See :ref:`frontend-api` for details.

    mixer
        A GStreamer element that controls audio volume.

    tracklist
        Mopidy's name for the play queue or current playlist. The name is
        inspired by the MPRIS specification.