In this Apple iMovie Tutorial (MacOS), I show you how to quickly adjust the volume of the audio/sound in your iMovie project, using the "R" key on your keyboard. Pressing and holding down the "R" key while left clicking and holding down and dragging your mouse, will bring up a yellow tool. Once you select the area you are interested in you can raise and lower the volume of the audio/sound in your video. Hope this helps!! Thanks for watching... ET