It is critical to understand the legal framework.
Use downloaded MP3s only for content you own, have permission to use, or that is explicitly royalty-free. For legal offline listening, consider YouTube Premium (which allows offline storage within the YouTube app) or legitimate music streaming services (Spotify, Apple Music, Tidal) that permit downloads. download youtube as mp3 firefox
Click the icon → a dropdown shows available downloads. Look for "Audio" or "MP3" variants. It is critical to understand the legal framework