To MP3 Converter Mac version and YouTube to MP3 Downloader Mac version. Even the YouTube to MP3 software can support both download and convert YouTube to MP3, most of the YouTube to MP3 Downloader and Converter can only work on Windows.Though there are countless apps supporting converting YouTube to MP3 or downloading YouTube to MP3, they are abandoned by the users for slow speed, much ads, much plug-ins, instability, etc.Though there are many YouTube to MP3 apps, most of them only support to download YouTube to MP3 or only support to convert YouTube to MP3.