How to Download YouTube videos as mp3 with Addoncrop
Free YouTube to MP3 Converter and Downloader | Wave.video
A YouTube to MP3 Converter for Mac You Should Choose
MP3 Downloader - Music Player - Apps on Google Play
GitHub - sndrjhlncgr/Youtube-Video-and-MP3-Downloader: An application that downloads high-resolution youtube videos from 144p to 8K and Mp3 from 48kbps to 160 Kbps.