[PATCH 4/5] mmdevapi: Use OpenAL for finding devices

[Chris Robinson]

FWIW, you can query ALC_DEFAULT_ALL_DEVICES_SPECIFIER (with ENUMERATE_ALL), 
ALC_DEFAULT_DEVICE_SPECIFIER (standard playback), and 
ALC_CAPTURE_DEVICE_SPECIFIER (record) to get the default device as seen by 
OpenAL, instead of taking the first as the default.

Just make sure to query the default after the device list, since querying the 
device list can invoke a re-probing of available devices/backends.