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參考資訊如下
Mp3 Youtube: Youtube Downloader

Mp3y Downloader is a solution to help you download youtube videos to your computer quickly, convert any youtube video to MP4, 3GP, WEBM, MP3, OGG, M4A online ...

YouTube Converter

Online Video Converter does not require any installation on your PC, and you can convert videos in just 3 simple clicks!

YouTube to MP3 Converter

Super fast YouTube to MP3 converter, easy convert your videos to mp3 at 320kbps. Simple, very fast and forever free.

YouTube to MP3 Converter

Download your YouTube videos as MP3 (audio) or MP4 (video) files for free with YTMP3, the fastest and most powerful YouTube Converter.

YouTube to MP3 Converter

Convert your favorite YouTube videos to MP3 or MP4 files, and download them for free with Y2Mate, the fastest YouTube Converter. No apps needed.

YTGoConverter

Easy-to-use, free YouTube to MP3 converter. Convert videos to MP3 or MP4 formats for offline enjoyment. No registration required for download.