Before listing pros and cons, a crucial clarification is necessary:
Most popular MP3 downloader extensions (e.g., Video DownloadHelper , Easy YouTube MP3 Downloader ) integrate a small button next to the Firefox address bar. When you visit a page with audio (YouTube, SoundCloud, a podcast site), the button lights up and a dropdown menu lists available MP3 qualities (128kbps, 320kbps, etc.). mozilla mp3 downloader