http://www.ehow.com/guide_5-http://www.ehow.com/guide_5-computers.html.htmlwww.ehow.comhttp://www.ehow.com/how_4445021_the-master-volume-acid-pro.htmlUnderstanding the master volume in Sony Acid Pro is an important part of editing sound and music, get a tutorial in this free video. Published on 7/17/2008