Firefox blocks all media with sound from playing automatically. If you want a website to automatically play media, you can give it permission by following one of the methods below.

Site settings

When Firefox is actively blocking a video with sound, a special icon will appear in the address bar. Click the in the address bar to open the Control Center where you can toggle the option to block or allow Autoplay sound. This option will always appear in the Control Center.

Add sites to your list to autoplay media

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. Select the Privacy & Security panel.
3. Scroll down to the Permissions section.
4. Find the Block websites from automatically playing setting and click Exceptions to manage your list.

Always allow or disallow media autoplay

To always allow or disallow autoplay for all media with sound, follow these steps:

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. Select the Privacy & Security panel.
3. Scroll down to the Permissions section.
4. Use the Block websites from automatically playing sound setting to change your preference. Your selection will apply to all media for all websites.