# &appname; Manual V&manrevision;

## Introduction

The &app; application is an audio mixer that enables you to mix audio for two-channel sound cards.

## Getting Started

### To Start &appname;

You can start &app; in the following ways:

Applications menu

- Choose Multimedia Volume Control.

Command line

- Execute the following command: `mate-volume-control`

### When You Start &appname;

When you start &app;, the following window is displayed:

#### &appname; Window

Shows Volume Control main window.

The &app; window contains the following elements:

Menubar

- The menus on the menubar contain all of the commands that you need to work with &app;.

Display area

- The display area contains the channel faders and associated options for several mixers, which enable you to control the volume on those mixers.

  &app; populates the display area dynamically, based on the functionality supported by your sound card. The mixers displayed in your &app; window might be different to those shown in Figure 1.

## Usage

### To Change a Mixer Volume

To change a mixer volume, use the channel faders for that mixer, as follows:

- To increase the volume, slide the fader up.

- To decrease the volume, slide the fader down.

### To Lock the Mixer Channels

To lock the left and right mixer channels together, select the Lock option for that mixer. When you lock the mixer channels, &app; synchronizes both faders.

### To Silence a Mixer

To silence a mixer, select the Mute option for that mixer.

When you adjust the fader of a muted channel, &app; deselects the Mute option for that mixer.

### To Specify the Current Recording Source

Any mixer that has a Rec option can be a recording source.

To specify the current recording source, select the Rec option for that mixer.

## Preferences

To configure &app;, choose Edit Preferences.

&app; populates the Mate Volume Control Preferences dialog dynamically, based on the functionality supported by your sound card.

Use the options in the Shown column to select the mixers that are displayed in the main &app; window.

vol

- Select this option to display the faders that control the main volume.

pcm

- Select this option to display the faders that control the wave files.

speaker

- Select this option to display the fader that controls the speaker output jack.

line

- Select this option to display the faders that control the line input on your sound card, if the sound card has a line input.

mic

- Select this option to display the fader that controls the microphone input on your sound card.

cd

- Select this option to display the faders that control the CD player input gain.

igain

- Select this option to display the faders that control the volume level of the selected recording device.

line1

- Select this option to display the faders that control the second line input on your sound card, if the sound card has a second line input.

phin

- Select this option to display the fader that controls the volume of the phin device.

video

- Select this option to display the faders that control the volume of the video devices.

To change a mixer label, double-click on the text in the Mixer label column, then enter the new label text.

To reset the mixer labels to the default values, click on the Reset labels to their defaults button.