audiocfg —
configure default audio device
  
    | audiocfg | setindex
      direction encoding
      precision channels
      sample_rate | 
The audiocfg utility helps maintaining the audio and
  mixer device symlinks.
Run with “list”, it lists
    the available audio devices and shows the currently selected default audio
    device.
Run with “set”, it sets the
    hardware format. The direction is represented by
    either of 'p' (playback) or 'r' (record), or both of them. This indicates
    the direction you want to set. The remaining parameters
    encoding, precision,
    channels, and sample_rate
    indicate the hardware format you want to set. These parameters must be
    selected from the candidates displayed by audiocfg
    list.
Called with “test”, it plays
    a tone of 2 seconds for each channel of the device with the index
    index. Called with
    “default”, it sets the default audio
    device to the one with the index index.
audiocfg needs access to
    /dev/drvctl and write access to
    /dev (when used with
    “default”) to work.
  - /dev/audio
- Symlink to default audio device.
- /dev/audio[0-9]*
- Available audio devices.
- /dev/audioctl
- Symlink to default audio control device.
- /dev/audioctl[0-9]*
- Available audio control devices.
- /dev/drvctl
- Used for finding the corresponding audio driver to an audio device.
- /dev/mixer
- Symlink to default mixer device.
- /dev/mixer[0-9]*
- Available mixer devices.
- /dev/sound
- Symlink to default audio device (for the difference to
      /dev/audio, see
      audio(4)).
- /dev/sound[0-9]*
- Available audio devices.