No sound with flash or quicktime media.
 

I get sound with all other sources fine, but when I play flash games/movies or quicktime, I get silence. My new PC came with onboard audio, so I put in my old Audigy in its place. I have played around with the hardware settings, still acting up.

Stupid question, but is your volume set to full across all settings?

Also, try upgrading drivers and DirectX to the latest version.