Set Different Audio Output Devices for Each Firefox's Tabs Free on Windows 11

With this add-on, you can listen to favorite podcasts via your headphones while your friend is watching a video via his or her headphone.

The test steps - Firefox's add-on - Audio Output Selector 1.0
OS: Windows 11 Home
Download: https://addons.mozilla.org/en-US/firefox/addon/audio-output-selector/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search

1. Open Firefox, click menu -> Add-ons and themes.

Search 'audio output selector'. 

Firefox will lead you to the add-on page.

Click the name of the add-on, then click 'Add to Firefox'.

Click 'Add'

Click 'Okay'

Click menu to pin the add-on to toolbar (see picture below).

The white icon is hard to see in the default theme.

 

 Open the target tab -> click the add-on's icon -> click 'Select Device'

 

 The message says, edit configuration value first.

 

 2. Open a new tab, at the address bar , type about:config, then hit Enter.

 

 Click a button 'Accept the Risk and Continue'

 

 

Search 'media.set', at 'media.setsinkid.enabled' click a button on the right (see picture below) to change a value to true.

 

 

 

Go back to the target page, click 'Select Device' again, the message says click the page to activate.

 

 

I clicked the page above the media player, then clicked 'Select Device', selected the audio output device - speakers, then click 'Allow'.

 

The settings in Windows 11's sound settings will not affect this settings.

 

 

 

To open Windows 11's sound settings, press a Windows key on a keyboard, search and open 'sound settings'

The sound from a new tab can be set to send to another the selected audio output device.

The test steps - Firefox's add-on - Audio Output Selector 1.0
OS: Windows 11 Home
Download: https://addons.mozilla.org/en-US/firefox/addon/audio-output-selector/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search