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!

>>11
oh hi Anonymous we were just watching >>2 - >>10 making idiots of themselves