In VibeEngine’s mixer mode, if there is a sound distortion or if I hear a popping sound from the line input. How to solve it?

There are a few possible solutions: 
 
In Windows 10: 
 
Right-click on the sound icon in the bottom-right corner of the toolbar -> Sound settings -> On the Recording page, select Line in -> Adjust the input volume or disable audio enhancement. 
 
In Windows 11： 
  
Go to System -> Sound. Click on the Line Input and adjust its volume or turn off the option, “Enhance audio”.