It's no good ripping the YT vids if they remain gigantic video files, so go and download FFMPEG, which is the free/safe tool to convert from video to MP3.
The video will start playing in the same. VideoHunter is an all-featured HD video downloader, providing user-friendly features and speedy performance to download online videos/audios from over 1,000 sites to MP3, MP4 formats, including YouTube, Facebook, Twitter, Instagram, SoundCloud, Vlive, Pornhub, Niconico, Bilibili, TED, CNN, and so forth. If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.
