Oct 01, 2019 Windows 10 has the volume mixer which lets users mute anything, even system sounds. On macOS, you need to install a free app called BackgroundMusic to do the job. Mute an app on macOS. BackgroundMusic installs as a package and runs from the menu bar. It’s a fairly old app and its 64-bit so you’ll be able to use it on Catalina however, the latest version seems to be problematic.
Safari User Guide
Safari lets you mute audio in any open tabs—helpful when you’re listening to audio from one website, and unwanted audio starts playing from another.
If you’re viewing a tab that’s not playing audio, the Audio button in the Smart Search field is white with a blue outline. If the tab is playing audio, the Audio button is solid blue.
Mute audio
In the Safari app on your Mac, do any of the following:
Mute audio in the tab you’re viewing: Click the Audio button in the Smart Search field.
Mute audio in other tabs: If you’re viewing several websites that are playing audio, Option-click the Audio button in the Smart Search field to let audio play in the tab you’re currently viewing and mute the audio in other tabs.
Mute all audio: If you’re viewing a website that’s not playing audio and other tabs are playing audio, click the Audio button in the Smart Search field to quickly mute all audio in other tabs.
Mute any tab: Click the Audio button on the right side of the tab in the tab bar.
See websites that are playing audio
In the Safari app on your Mac, click and hold the Audio button in the Smart Search field to see a list of websites that are playing audio.
Choose a website to go to the tab where the audio is playing.
If you’re viewing a website that’s not playing audio, the list of open websites also includes the Mute All Tabs option. If it is playing audio, it includes the Mute This Tab or Mute Other Tabs option.
Unmute audio
In the Safari app on your Mac, click the muted Audio button in the Smart Search field, or on the right side of the tab in the tab bar.
Note: You can mute and unmute audio in tabs that are in the active Safari window as well as in tabs that are in other Safari windows behind the active window.
Use the latest version of macOS
Mute An App
The first step is to make sure that you're using the latest version of macOS. Back up your important information and then update the software on your Mac.
Check your sound settings
If you still can't hear sound from the internal speakers after updating your computer's software, check your sound settings.
Mac Mute Sound From Application
First, disconnect any external audio devices from your computer. Also disconnect any cables from the USB, Thunderbolt or 3.5 mm audio ports.
Mute Sound From One App In Mac Computer
- From the Apple menu , choose System Preferences.
- Click Sound.
- Click the Output tab, then select the built-in speakers. If you can’t see built-in speakers as an option in the Output window, contact Apple Support.
- If the Output volume slider is set to low, move the slider to the right and test again.
- If the Mute tick box is selected, deselect it and test again.
- If you still can’t hear any sound, contact Apple Support.