We use /SUBSYSTEM:Windows and 'MinimumRequiredVersion': '5.01' to
make our app work in Windows XP, but we use 'v140' toolset instead
of 'v140_xp' so that we have access to modern APIs like WRL.
OnPropertyValueChanged() is called sometimes couple times a second
and sometimes when AudioMutex is locked already causing a deadlock.
Also some code added to support Desktop Bridge converter to UWP app.
John Preston