You can use the Audio Loop Play button to change the volume on an existing Audio Mix effect while you play the clip.
The Audio Loop Play button appears in several of the audio effect tools and is also a mappable button in the Play tab of the Command palette. For more information on mapping buttons, see
Mapping User-Selectable Buttons.
For more information on the Audio tool, see
Using the Audio Tool. For limitations on adjusting volume, see
Limitations on Adjusting Volume. For information on improving response time, see
Improving Response Time.
The Avid system automatically saves your changes as part of an Audio
Mix effect.