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How do I get m y volumn back (there is none any more)?

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There is no sound to my computer any more. The volume icon in the tray goes all the way up and still I can't get sound. I can't listen to music any more, for example.

There is no sound to my computer any more. The volume icon in the tray goes all the way up and still I can't get sound. I can't listen to music any more, for example.

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Did you check the sound mixer to make sure that Firefox was not muted.

http://kb.mozillazine.org/Video_or_audio_does_not_play#No_Sound_in_Firefox