Extend Api to include Speaker Config Manangement

[xenolightning]

Extend the Api to be able to query and update the current speaker configuration on any supported device.

Docs of relevance:

IAudioChannelConfig https://msdn.microsoft.com/en-us/library/windows/desktop/dd370862%28v=vs.85%29.aspx

KSAUDIO_CHANNEL_CONFIG https://msdn.microsoft.com/en-us/library/windows/hardware/ff537083%28v=vs.85%29.aspx

[xenolightning]

This no longer looks possible in Windows Vista and above.

[xenolightning]

Preeeeetttty fucking sure you can't do this at all unless you have access to drivers.

Closing.