4K YouTube to MP3 for Mac is a powerful video to mp3 online tools to help users extract audio files from MP3, V4V and SoundGoud to MP3, M4A and OGG formats. The next question is about how to use 4K YouTube Convert YouTube videos to MP3, and set the desktop to MP3 player?
Download: 4K YouTube to MP3 for Mac (online video audio extraction tool)
How to convert YouTube to MP3?
1. Copy the video link from the browser.
2. 4K YouTube to MP3 application, press the "Paste URL" button.
3. After that, you can just wait until the download is complete.
4. You will find MP3 files in the output directory. Simply right-click the project and select "Show in folder."
Due to its embedded audio player, you can listen to audio tracks directly from the program interface. Just click the "play" button on the project logo, or the pop-up menu, select "Play."
How to 4K YouTube Desktop as a MP3 player?
1. Download the latest version of 4K YouTube to MP3 for Mac software!
2, find playlists on YouTube and copy the link. 
3, open 4K YouTube to MP3 and select "high" quality and "MP3" format.
4, paste the link into the program. 
5, the program will start searching and downloading. The downloaded file will be saved on your computer.
6, with the integrated player, you can listen to the song list directly from the application. Just click Play to play the song. You can also use the search function to find more songs.