Flash Player 11.6 r602 annoying boop sound

Flash Player is giving off a "booping" sound every 6 to 10 seconds it's utterly annoying. I already tried a reinstallation but to no avail. What could that be and how do i shut it off?

The Volume Meter in Windows 7 Ultimate x64 shows it as Flash Player 11.6 r602 and i have the latest version installed.

I'm using Firefox v20.0 x64 If there's any additional information that is needed i will try to provide it.

I have no idea what's causing it to do this sound and recording it would be a pretty hefty piece of work i think^^ so please bear with it...