How to Convert MP4 to MP3 for Free
Start Freemake Video Converter. Click "+Video" button to add MP4 videos you want to convert to MP3 or "Paste URL" button to convert MP4 video from YouTube.
Select "MP3" format
Click "to MP3" at the bottom of the software. Choose a ready preset or create a custom one. Select "Export to iTunes" if you want to transfer MP3s to your iPod, iPad or iPhone.
Convert MP4 video to MP3
Click "Convert" to start conversion process.
Alternatively, you can download MP3 free from YouTube.