Build 4.21 Preview 4- Sequencer Still Not Rendering Audio?

Hey StoppedClock and SkyStalker382 , Thanks for your feedback ,
But i am not able to do it , and i Do not know what is happening , Let me tell you my Steps What i have done to achieve it .

  1. First i Change the WindowsEngine.ini file to this – image 1
  2. Then i Open the Editor Using -audiomixer commandlineArgument – image 2
  3. Then i Enable plugins Sounds Utilities and Synth
  4. After that i render the Sequencer Using these Settings , – image3 , image 4

i Can hear audio playing but i cannot see any audio file .

Iam gonna attach some more ScreenShots , i do not know if they are usefull .

And if there is anyother way that i could debug this problem ,

As StoppedClock said
" Do you have any other programs that output audio to see that yr computer does render audio?? "
What does this mean , Does Windows need to configure first to give audio Renders .