Whenever I adjust the ‘System Sounds’ in the volume mixer and then close the volume mixer, It keep resets back to 40% (the volume before i install fxsound) or it unmute itself when I turn on the PC again (I had test it with fxSound and without fxSound. without fxSound It won’t reset the sound mixer).
The fix for the volume resetting issue will be available in the next reslease.