If you would like to change the volume of an audio clip in the Timeline you click on the clip, go to the 'Clip' menu in the task bar, go to the 'Audio' option, and select 'Volume'. A window will pop up allowing you to make the sound louder or softer on the selected clip. The 'Clip' menu also gives you the options to mute the audio clip completely and at “Fade In and Fade Out.” These are nice audio transitions that allow you to place a volume fade from mute to full volume at the beginning of a clip, and a fade down from full volume to mute at the end. This is a comparative transition to video fades, and the two are often coupled together. When in the 'Clip' menu’s 'Audio' section, you either select 'Fade In' or 'Fade Out' depending on whether you want the transition on the beginning or end of your selected audio clip, and it will place the effect there.