> Hi,
> 
> I have "no sound" configured in the control panel >
> Sound
> Tab Sounds: Template: No sound.
> 
> I would like still to listen to the "normal" sound
> of other applications (music...), but not to this
> stressful beep of HTTRACK anymore ...

Control Pannel / Sounds / Sounds / WInHTTrack Website Copier / Mirror Finished
=> "none"