Now Playing Hub - Media Control от BBU

Now Playing Hub — Media Control for Every Tab

Stop hunting for the right browser tab every time you want to skip a song or
pause a video. Now Playing Hub adds a small icon to your address bar that
gives you instant play, pause, next and previous controls for any tab
that's playing media — YouTube, YouTube Music, Spotify Web Player,
SoundCloud, and any other site that supports the standard Media Session API.

Why you'll love it
🎧 Control media in any tab — no need to switch tabs just to hit pause or skip a track.
📻 See everything playing at once — a compact sidebar lists every tab currently playing audio or video, so you can manage multiple tabs from one place.
▶ Play, pause, skip forward and back — one click, right from the toolbar, for whichever tab you pick.
🔀 Jump straight to a tab — a one-click button switches to (and focuses) the tab you're controlling.
🎨 Looks and feels native — automatically matches your Firefox theme (Light, Dark, Alpenglow, or any custom theme).
🔒 Zero data collection — Now Playing Hub doesn't collect, store, or transmit any of your data. Ever.

Works with
YouTube, YouTube Music, Spotify Web Player, SoundCloud, Twitch, and any other
website that implements the standard Media Session API for
play/pause/next/previous controls — the same API browsers use for OS-level
media key support.

How it works
Click the icon in your address bar to open a compact popup. The left side
lists every tab currently playing media, each with its cover art and title.
The right side shows the selected tab's artwork, title and playback controls.
Pick a different tab from the list to control it instantly, without ever
leaving the page you're on — perfect for anyone who keeps a browser full of
tabs playing music, podcasts, or videos in the background and wants one
simple remote control for all of them.

Permissions explained
Access browser tabs: to detect which tabs are playing media and let you switch between them.
Access to website data: to read media info (title, artist, cover art) and send play/pause/skip commands through the page's Media Session API.
Theme: to match the popup's colors to your current Firefox theme.