Change default sound device

[watfordjc]

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Windows Audio

The latest code for the program has a collection of audio interfaces.

NAudio does not appear to provide a way to change the default devices. A cursory Googling suggests the interface IPolicyConfig10 (plus IPolicyConfigVista and IPolicyConfig7) would need implementing. One such MIT-licensed implementation is frgnca/AudioDeviceCmdlets.

Windows 10 requires too many clicks to change the default render (sound output) device.

• [x] Create function to change default render device.

[watfordjc]

• Commit 58a46df imports some files from frgnca/AudioDeviceCmdlets.
• Commit c45259f adds a "Make Default" button to MainWindow for active audio devices that, when clicked, makes the currently selected device the default render/capture device.