I've discovered another idiotic effect of a form of "late binding" (the dumbest development idea of all time).
In short, if a user wants to mute Windows Sounds to listen to some music (for example, Windows Media Player), then every other program on the system that has sound feedback enabled...
audiofeedbackaudio management
media player
mute
operating system
program control
registry tweak
software development
sound issues
sound management
sound mixer
sound settings
system sounds
third party software
user experience
volume control
windows 7
windows sounds
windows vista