Here's one for the Mac users, and I'm surprised more people don't seem to know about it considering the "bloops" I hear as people adjust their volume during podcasts. As I don't use a desktop, I can only vouch for this on the Apple laptops, where the volume is adjusted using function keys. Quite a useful feature is that in addition to a visual representation of how loud your volume is during the adjustment, you get a "bloop" sound at the appropriate volume. But if you'd rather adjust the volume using only the visual cue and don't want to hear the "bloop", just hold the shift key as you're adjusting with the function keys. Here's what it sounds and looks like first as a default, and then as I press the shift key:
(Aggregator users may need to click through to see video)
