In window system sounds manager, you can select a particular sound event, (Asterisk, Critical Stop, etc.) and set only that event's sound to 'None'. But as stated, this is globally for all programs.
TC 21 Deluxe, TC 20 Platinum, TC 2015 Platinum, TC 2016 Platinum, TC 2017 Platinum
i7- 3770 Ivy Bridge 3.4 GHz, 16G Crucial Ballistic, ASRock Extreme 4, EVGA 1060 SSC, Windows 10 Pro 64 Bit