Download Only Audio in MP3 Format With youtube-dl [Quick Tip]
GitHub - udidoron/youtube-dl-multi-mp3-downloader: Small wrapping script in Python (2.7), which allows downloading multiple YouTube files' audio into mp3 files. Uses youtube-dl, ffmpeg and ffprobe.
command line - How to download playlist to mp3 format with youtube-dl? - Ask Ubuntu
How to download audio from Youtube in Ubuntu | Ubunlog