This was resulting in a loop consuming 100% of the CPU.

Public issue https://github.com/mackron/miniaudio/issues/265

Public issue https://github.com/mackron/miniaudio/issues/265

Public issue https://github.com/mackron/miniaudio/issues/258

These are in preparation for some spatialization functionality.

This does not yet support the following:

  * Cone based attenuation
  * Doppler effect
  * Multiple listeners

This had the naming of source and excite the wrong way around.

This is in preparation for some work coming to the upcoming resource
manager.

This was not setting the NON_BLOCKING flag correctly when NO_THREADING
is set.