If you want to listen to songs on the mp3 format from a YouTube video without internet, you could use YouTube MP3 Converter.
We know that there are lots of website tools and software that can strip the audio from YouTube videos and send you the audio file to download, but here we’ve chosen to focus mainly on Desktop and Android mobile.
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Fbtube – The best MP3 converter – just paste an URL to convert and save
FbTube is the superb website tool for ripping the audio from YouTube videos and converting it to MP3 format.
After that Select ‘Extract audio’ and pick MP3, OGG or M4A, then click ‘download video’ and the audio will be converted and saved to the destination of your choice.