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### 4.6 Sound options

#### 4.6.1 music-volume

— Command-line option: `--music-volume=<value>`
— Environment variable: `LW6_MUSIC_VOLUME`
— XML key: `music-volume`

> Type: float.

> Default value: 0.6. Min value: 0. Max value: 1.

> Set the music volume.This is a floating point value. 0 is mute. Maximum value is 1.

#### 4.6.2 snd-backend

— Command-line option: `--snd-backend=<value>`
— Environment variable: `LW6_SND_BACKEND`
— XML key: `snd-backend`

> Type: string.

> Default value: ogg.

> Sets the sound backend AKA 'snd' to use. Can be 'ogg' or 'csound' but only 'ogg' will produce sound in the current release.

#### 4.6.3 sound-volume

— Command-line option: `--sound-volume=<value>`
— Environment variable: `LW6_SOUND_VOLUME`
— XML key: `sound-volume`

> Type: float.

> Default value: 0.3. Min value: 0. Max value: 1.

> Set the sound volume.This is a floating point value. 0 is mute. Maximum value is 1.