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Firefox will not play any type of audio. There's no indication of audio being played in Firefox in the soundmixer either. Audio works perfectly fine in all other applications. Steps I've already taken to try and solve the issue:

- Reinstall audio drivers - Remove cache, cookies and browser history - Refresh Firefox (remove addons / reset settings) - Reinstall Firefox - Rebooting system in between those steps

I've made sure my audio devise is set as default obviously.

Everything worked fine until latest Win 7 update, but i have no functioning 'restore point' to rollback to, so i have to find a workaround. Sound works on the PC, i can play mp3's or mp4's fine. But audio from Youtube or FaceBook or BBC Iplayer is absent when i open these sites in Firefox. (yes i've checked for volume and muting, i've cleared the cache i 've tried in safe mode, all without success) I tried one modification to the registry which worked ONCE and not afterwards.....which is of course impossible. If i open the very same sites in Opera...the audio is perfect. WHAT ON EARTH is going on and how do i put this right? Thanks in advance for any insights and fixes.

Although Chrome and Internet Explorer playback all MP3 files normally, Firefox 41 won't playback the first second of any MP3 file.

Example:

http://www.sakisgouzonis.com/publicfiles/Sakis_Gouzonis_-_In_Unity_There_Is_True_Strength.mp3

I started Firefox in Safe Mode but the problem is still there. I also removed completely all of my add-ons but the problem remains.

Thanks in advance for your help on this matter.

I've recently built a desktop PC with this configuration:

Ryzen 7 1800X

Geforce GTX 750 Ti (driver version: 399.07)

16GB DDR4 RAM

250GB SSD + a HDD for data only, no system files

Windows 10 64bit

External Sound card Scarlett 2i4 1st gen. [it worked fine with my old Windows7 desktop]

Any audio (soundcloud, zophar.net/music) or video (youtube, twitch, facebook) stream has the same problem: it randomly skips frames. I mean that video nor audio are interrupted, they continue, but they skip some "frames".

This bug occurs with the current official version, the current beta version and the current Nightly.

This bug does not occur on my laptop, windows 8 running an i5 CPU and no dedicated GPU.

This bug does not occur on other apps. I've tried: VLC, Facebook app, Twitch app, Microsoft Edge, Internet Explorer, Winamp.

I have: Firefox 38.0.5 Shockwave Flash 18.0.0.160

Problem is that when I watch a video that is NOT in youtube, there seems to be no sound. This happens on sites such as: twitch.com kissanime.com (In this site the have the option to play videos in HTML5, which works fine) and website with flash games like: kongregate.com

The url below plays in all chrome/ie/safari, but not firefox on windows. It was tested and does play in Firefox on a mac. Please advise.

http://www.jwpepper.com/audio/10514376-2.mp3

Hello, suddently after upgrading my Firefox Developer Edition to version 77 I noticed that my pinned tabs have sound icon again, which i previously disabled using

browser.tabs.showAudioPlayingIcon = false

Now however I found that it was removed here:

https://hg.mozilla.org/mozilla-central/rev/1360dbbd2d6d

How can i disable this annoying audio icon now ?

http://hpr.dogphilosophy.net/test/index.php This is an audio test page to see what is supported by the browser Everything plays fine. But when I tested the "flac" file, there was an error. However, when I downloaded the file, opened my file browser, then dropped the "flac" file into Firefox, it played just fine using the VLC plugin.

So why can't Firefox play the file online, but does from a file?

Hello to All: I need some help. About 15-20 days ago, I had to re-install my Windows 7 (32-bit) OS and all software including Mozilla Firefox Quantum (32-bit). Since installing Mozilla Firefox Quantum 67.0 (32-bit) - when I use a "TAB" to listen to streaming: Live internet radio or Podcast, all is good. The problem is when I open a second "TAB" to surf or view info. When I start to click on anything (ex: next page), the first "TAB" playing the Podcast will stop playing and return to the beginning of the Podcast. This only happen when opening a second "TAB". This never happen before. Can it be the new update to level "67.0" or a bad installation of Firefox? Should I un-install Firefox and then re-install Firefox?

For some time now I have had no audio when playing media on Firefox. I'm on a Dell laptop using WIN 10 and system sounds, iTunes etc all work fine.

I tried the Audio mixer and when it starts there is a speaker with a little x beside it showing even though the number shows 100. Tried with 2 tabs - one plays a video from BBC iPlayer and the other Youtube. Playig with Audio Mixer settings I got the sound to come from BBC video - Youtube nothing. Of course resarting FF set the Audio Mixer back to normal settings again so that isn't a fix at all.

All drivers and Win system updates are in force and my Firefox updates automatically. I use the Sync settings in FF to work between Mac and PC so not being able to use it any more would be a major problem. Any ideas?