4K YouTube to MP3 is very similar to 4K Video Downloader (more down this webpage), but dedicated specifically to stripping the audio from videos. The converted MP3s will appear within your Videos folder, however you can change this using the options menu, which may be accessed through the cog icon http://cristianydios.blogoscience.com/3320345/a-review-of-mp3-songs-free-download-for-mobile-djmaza