No audio when using youtube

When I stream those youtube videos, the video looks good, but no sound.  Other programs in my system like MPC, winamp, etc. are fine with audio (with the correct codecs installed).

What's the deal?  I even reinstalled Macromedia, but the problem still exists.  Can anyone plz help me out?  TIA!

>>6
>>7

you two think that you are so smart giving out these advices to the OP.. but in reality, you 2 are just as dumb as the OP.. same league, same dumbfucks.. I LOL @ you 2