Sound isn't working in Firefox? Plugins are installed, volume is up, why doesn't it work??

I'm not getting any sound through Firefox. Music files won't play, videos are silent. I restarted my system and on first reopening Firefox I got one video to play with sound, but when I tried to open another the video froze. My sound is on and working because I can hear sound through IE. It was working perfectly yesterday, and I've never had a problem with it, so?

Answers:    maybe some file is corrupt or was accidentally deleted.

I'd reinstall the software on top of the current.

Try it.

Good Luck.

:)
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