GitHub - aemxn/youtube-to-mp3: Youtube to MP3 downloader using youtube-dl
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GitHub - jweslley/youtube-dl-mp3: Downloads videos from YouTube and convert them to mp3.
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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.