Mute-Sites-by-Default-Enhanced 作者： Alfonzzoj

Control which websites can play sound in Firefox.

Features
- Allow or mute the current site from the toolbar popup
- Mute or unmute all open tabs for the current session
- Default policy: allow by default, or mute by default
- Whitelist (never mute) and blacklist (always mute)
- Optional sync: update lists when you mute/unmute a tab
- Persistent “Mute all sites” / “Allow all sites” in settings
- Wildcard patterns (e.g. *.youtube.com)
- Languages: English, Spanish, German, French (follows Firefox language)

How it works
Priority is: blacklist → whitelist → default mode.
List and settings data stay on your device (storage.local). This add-on does not collect or send personal data.