# Audio sinks

Mopidy has very few audio configurations, but the ones we have are very powerful because they let you modify the GStreamer audio pipeline directly.

If you have successfully installed GStreamer, and then run the `gst-inspect-1.0` command, you should see a long listing of installed plugins, ending in a summary line:

    $ gst-inspect-1.0
    ... long list of installed plugins ...
    Total count: 233 plugins, 1339 features

Next, you should be able to produce a audible tone by running:

    gst-launch-1.0 audiotestsrc ! audioresample ! autoaudiosink

If you cannot hear any sound when running this command, you won’t hear any sound from Mopidy either, as Mopidy by default uses GStreamer’s `autoaudiosink` to play audio. Thus, make this work before you file a bug against Mopidy.

If you for some reason want to use some other GStreamer audio sink than `autoaudiosink`, you can set the `audio/output` config value to a partial GStreamer pipeline description describing the GStreamer sink you want to use.

Example `mopidy.conf` for using OSS4:

    [audio]
    output = oss4sink

Again, this is the equivalent of the following `gst-launch-1.0` command, so make this work first:

    gst-launch-1.0 audiotestsrc ! audioresample ! oss4sink