DeviceAudioTrackSource.CreateAsync() gives 0 avaliable source at Win32 x64

[ysheung]

Describe the bug
When we tried to call DeviceAudioTrackSource.CreateAsync() at our C# WPF project.
It always gives us 0 for Tracks.Count as reult.
MR-Webrtc seems works fine besides the sending audio part,
It is receving Video and Audio properly.

To Reproduce
Steps to reproduce the behavior:
1.Create DeviceAudioTrackSource by
var _microphoneSource = await DeviceAudioTrackSource.CreateAsync();
2.Then check _microphoneSource.Tracks.Count see how much is it.
3.The count is always 0.

Expected behavior
"Invalid interop handle to a native object" was throw because of
Microsoft.MixedReality.WebRTC.InvalidInteropNativeHandleException from Microsoft.MixedReality.WebRTC.dll
when we tried to add the AudioTransceiver.

Environment
Please fill the information for each peer if different

• MR-WebRTC version release 2.02(NuGet)
• Platform: Windows Desktop
• Architecture: x64
• Target device: Windows Desktop

Additional context
We have tried to use NAudio in same project that
Debug.WriteLine(WaveIn.DeviceCount);
Debug.WriteLine(WaveIn.GetCapabilities(0).ProductName);
gives us the proper audio capture device count and device name.
Is this problem related to those issue I have read about the ADM/ADM2?
We have also tried to rebuild the library but the libwebrtc.dll build failed.

Thank you for reading.

[ysheung]

for a littlebit update,
_microphoneSource.Tracks.Count became 1 after calling LocalAudioTrack.CreateFromSource().

Seems it has get the device to capture but still nothing has been captured.
When we runing it in windows, it doesnt show the mic is using by the application.