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I have somehow muted all the tabs in my google chrome. Youtube and other flash players are playing video, but there is no sound.

In Window 7 Volume mixer I can see Google chrome icon and it has muted icon there. But clicking that icon unmute sounds just for a second and then it's muted back on.

Seems that chrome itself or some of it extensions are turning mute...

Update: How do I mute certain tabs in Chrome? question seems related, but I don't have MuteTab extension installed in Chrome.

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up vote 3 down vote accepted

OK. I've found out what it was. I have Chrome toolbox extension installed and it has "Mute all tabs" functionality. And a keyboard shortcut for it is Alt+W. So I somehow pressed this combo and switched it on.

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