BlackHole is a free, open-source tool to route audio anywhere on your Mac. You know how the audio from YouTube in Safari comes out the speakers or headphones of your Mac, and that’s about it? Well, ...
$29 (free test version available); $15 upgrade to version 5 macOS is magnificent at allowing us to add audio destinations. You can target internal speakers, external ones added via USB, Apple TVs, ...
macOS has two distinct volume control options in the Sound preference pane that affect how a Mac produces sound. The Alert volume slider in the middle controls sound effect and notification volume; ...