AVG email scanner sound

Len, Bring up your AVG User Interface -> Advanced Settings -> Sounds.
AVG Guru

When AVG does a scan on incoming emails it pops up a notice in the tray area and makes a loud harsh extremely annoying sound .
I have search for a setting to turn this sound off or a sound file that I could replace to no avail.

OS = win 7 pro

Any help will be appreciated.

Len, Bring up your AVG User Interface -> Advanced Settings -> Sounds.
AVG Guru