Pour télécharger un mp3 depuis firefox sous android, sans le jouer automatiquement.

Une solution :

• In the Firefox address bar, enter about:config.
• Search for media.play-stand-alone.
• You can see true below the item's name.
• Tap the item's name (not on the search bar).
• A Toggle option has appeared at the bottom right. Tap it once. Notice the true has changed to false
• Now, when you'll tap on a .mp3 link, Firefox will prompt you with a Complete action using dialogue. To download the file, choose Download.