A major overhaul and refresh: YouTube Audio is rebuilt around one job - clean, reliable audio-only playback on YouTube and YouTube Music, on Firefox desktop and Android.

What is new and better:
- Rock-solid audio-only. Toggle it off and you land back on the video at the exact spot you were listening to, playing or paused, even if you flip it on and off in a hurry.
- Per-tab control. Switch audio-only for just the tab in front of you from the popup, the in-player button, or Alt+Shift+A on desktop; the global setting stays the default everywhere else.
- Reliable on Android. Audio-only holds through YouTube's player changes on Firefox for Android, including a fix for a mid-playback position reset.
- Honest status. The popup shows the real state of the current video, so you always know when something has fallen back to normal YouTube.
- Lighter and smoother. Changing one setting now reloads only what that setting touches, and a rare case that could make YouTube feel sluggish was tracked down and fixed.
- Friendly to your other extensions. If another extension has already patched the player, this one now adopts and chains with it instead of fighting it.
- Playback that stays awake. YouTube's are-you-still-there pause no longer interrupts audio-only listening, including long background sessions.
- Nicer in the player. The audio-only button matches YouTube's own controls in size and style, and audio mode shows the track artwork instead of a black rectangle.
- Cleaner downloads. One track, one well-behaved .m4a file, no pile of stray files.
- Tidy up the page, if you want. Hide Shorts, recommendations, comments, thumbnails, or channel pictures, cap the quality, or switch off autoplay-next.
- Nothing extra at install. The SponsorBlock lookup and the file-download ability now ask for their access only when you switch each one on. Until you accept the data notice, the popup points you straight to it.
- Cleans up when switched off. Disabling or updating the extension takes its tweaks back out of pages that are already open and hands playback back to YouTube.

Ghost mode (ad and telemetry blocking) and loudness normalization are on out of the box; SponsorBlock-style skipping, the equalizer, and the page tidy-ups are one switch away when you want them. Everything stays logged out. Requests for the media you play go to YouTube and its media servers without your cookies; nothing is stored or shared with anyone else, and the optional SponsorBlock lookup sends only a 4-character hash.