[George]

Try reducing your audio hardware accellerators.

Cllick START.

Click RUN.

Type in DXDIAG.

Click OK.

After the pages have fully loaded, click on the SOUND 1 tab.

Slide the HARDWARE ACCELLERATION slider one notch to the left.

Repeat with each sound tab.

If that doesn't cure the problem, repeat moving the sliders another notch to the left. Keep repeating as necessary.

Hope this is it,

George