Youtube and other embedded video webby w/ no sound

I have this problem. Since yesterday, i noticed i cant listen any sound coming from sources as websites (youtube and such vstreaming video websites) tho sound looks fine thru mp3 player, and windows alerts. I read around this is related to Flash player, ive tried solutions presented but no sucess.

Anyone has any tip about what is happening?

The only thing i remember doin different was to install some codec pack for windows 7 i found around that solved the problem i was having with bsplayer soundless. Maybe that solved one problem to create another.

thanks for the attention

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