Solve : problem with sound on my computer.?

1.	Solve : problem with sound on my computer.?
Answer» Hi, I was RECENTLY having PROBLEMS with sound on my COMPUTER. I can hear sound from windows media player or any other software that plays music like iTunes, etc. I hear sound as expected when I view a video on youtube using firefox. But when i try VIEWING a video on youtube using INTERNET explorer or avant browser, there is no sound. I have not changed any settings. I previously had problem where sound disappeared completely, but I fixed it using system restore. Any suggestions?Try here: http://support.microsoft.com/kb/555474 It's for XP, but there are same settings for Vista

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