Simple YouTube to MP3/MP4 Converter and Downloader – Get this Extension for 🦊 Firefox (en-US)
Media Converter :: add0n.com
Top 8 YouTube to MP3 Add-ons for Firefox
Free YouTube to MP3 Converter Alternatives for Firefox: Top 10 YouTube Downloaders & Similar Apps | AlternativeTo
Firefox add-on that allows MP3 conversion for free, video conversion, audio extraction from video, video and audio combining, multiple videos combined into one, maximum volume adjustment, video resolution change, video rotation, sound
Best YouTube to MP3 Converter for Mac and Windows in 2023