Each document has its own volume slider, which controls the output level of all the tracks in that document. The slider is contained in a document control bar. To show or hide the control bar, choose Volume from the View menu, or press V. Note that the volume slider supports automation, which means you can program a document to fade in or out by itself, while you do other tasks.

A document's volume may also be affected by the Crossfader, which fades back and forth between two documents, by the Master Volume, which controls the volume of the entire application, and by external factors, such as the Windows volume control.