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I am trying to remove or mute the Firefox sound (The BOOM sound and the Quick Drum sound) when:

  • I try to close Firefox with multiple Tabs
  • A download fails
  • Any other case where that HORRIBLE heart killing sound pops up

I read several ways to do this but all involve either lowering the sound of firefox via the System Settings, or lowering the overall sound of the system, both of which I do not want to do. I just want to actually remove or disable the sound.

Note that I still want to get the warning but without the horrible sound.

PS - It is also my suggestion that that sound will make you go deaf and blind if not already. I think a cat dies every time that sound is heard and scares the hell out of me when I am working calm and quiet.

share|improve this question
Is it possible to use custom alerts with FF? I don't see it in the options but if possible you could just copy the current ones, reduce volume 50% in Audacity, and re-add them. PS the cat thing is incorrect it's a baby seal. – Tom Brossman Sep 9 '12 at 6:53
up vote 3 down vote accepted

I see three options:

  1. Delete (move) the actual alert sound file, or lower its volume

    • It's /usr/share/sounds/ubuntu/stereo/dialog-question.ogg
  2. Mute all alerts from Sound Settings:

    enter image description here

  3. (for advanced users only): Add an AppArmor rule to Firefox's profile preventing it from accessing the /usr/share/sounds directory. (can add instructions if you need)

share|improve this answer
For #3, does this cause any secondary problems (like FF hanging)? – Tom Brossman Sep 9 '12 at 12:03
@izx - Can you provide the instructions for #3. I will try all 3 anyhow. For the #2 will this affect Skype alerts also? – Luis Alvarado Sep 9 '12 at 15:48

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