Log Message:
faudio: updated to 21.05

21.05

New Features:

Added SetAudioTrackEXT extension
Update to FNA3D 21.05
Update to FAudio 21.05
Fixes:

SDL2_FNAPlatform:
Changing window focus no longer unsets fullscreen, except on X11
Using "alt-tab" to switch focus out while fullscreen on Windows no \ 
longer causes error beeps when attempting to switch focus back in
Fix mouse support on Wayland