Macintosh OS/lost sound using firefox



I seem to have lost sound when using firefox. Sound still works when playing iTunes. Any ideas? I use a Mac OSX, 10.8.5.

Thanks, Janet

ANSWER: If it plays in safari and not in firefox, likely something is wrong with the flash plugin.

Firefox has a troubleshooting document here:

This is a thornier area than OSX - really what's going wrong is (likely) you have:
1) a problem with a your user in Firefox. You can try creating a new user just to TEST if sound works in a new user (meaning something is wrong with your user -
2) There's a plugin problem. Something like flash hasn't updated correctly.
3) Another plugin is disabling flash/ads/sound.  
4) A permissions issue - recently firefox may have asked your permission to play sound (or other info) on a site and it was denied. See info about the permissions manager here:

Yes, I'm sorry it's not an 'easy' answer on this. If #1 clears up the problem (a new user) then it's something with your existing user. I might suggest disabling all your extensions and seeing if that clears up the problem (that's #2+3). #4 is the least likely, but possible.

See where that takes you and let me know!

---------- FOLLOW-UP ----------

QUESTION: Oh Jeff, I SHOULD have checked Safari, but didn't think of it (I never use it). And there's no sound with Safari either. So that means it's not a firefox problem. Yet the MAc is capable of sound ...

I'm sorry I wasted your time with the answer you gave.



My guess is that something is wrong with the flash plugin.

Try downloading Google Chrome - it has it's own separate version of flash.

If this works, all you need to do is download and reinstall flash (which should fix the problem for safari and firefox.

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Jeff Greenberg


I can comfortably answer most basic/advanced questions regarding Macintosh hardware and software - nowadays only OSX. In fact, if it's prior to 10.3, there's a good chance I'll reject your question. Forget OS9 stuff - Igave up OS 9 ten years ago). Please do not ask me about OS9. My particular specialties are in Video editing/DVD authoring. I am a certified trainer in the "pro apps" (Final Cut, DVDSP, Soundtrack, Motion). I have been using Macs since 1985.


I'm an Apple Cert. Trainer for FCP, DVD SP, since the inception of this program. I've was
certified as an Apple Cert. Technician back in 1989.

Videography, Macworld, Tibits

BA film- Penn State. Certifications from Apple, Adobe and Avid for training.

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