Nvidia: Disable monitor audio output permanently

Watch the video:

0:00 - Explanation
0:20 - Fix 1: Temporarily disable monitor audio
1:10 - The issue with Fix 1
1:30 - Fix 2: Permanently disable monitor audio

Tired of Nvidia automatically picking your monitor’s audio sources as the default all the time? Disabled, but they just reenable themselves randomly, or when you update? Well, there’s a simple solution to your issues.