Hi Eren, did you figure this out? If not...
Download [
Process Monitor] and run it (no setup is needed, just unzip and run).
Immediately click on the 3rd toolbar button, looks like a magnifying glass. This will stop the monitoring temporarily.
Click the 5th toolbar button to clear the screen.
Click on the Filter menu and choose "Filter...". You want it to say
Path contains .wav. Click
Add.
Below, uncheck all items except the new one that we just created
(green) Path. Choose
OK.
Click the 3rd toolbar button again to begin monitoring.
Keep an eye on the "Process Name" in the list to see what is playing the sound.
I just tried this out and it showed me...