The tracks in the patch including the Black Death don't play the engine sounds of anything but the 'player's' aircraft (the Hurricane)..
I just tried recording a new track and when playing it back there's definitely a bug with missing engine sounds on all the aircraft in the track - except your own aircraft , where in-cockpit and for any external view its engine sounds are heard ok.
All the radio, hit, explosion and gun sounds for all planes appear to be ok, just these missing non-player aircraft engine sounds
