I seem to have a minor problem with sounds in FSO (22.214.171.124). I tried several mods and campaigns, even FS 2 and FSPort. In all mods there are no engine sounds (sound for thruster appears). Also there is no sound when targeting a ship and no missile-lock-sound-effect. Every other sound seem to work properly.
When I try elder builds (like 3.7.2 or even 3.18) all sounds appear.
It makes no difference whether I start the mods with Knossos or wxlauncher.
How to solve this bug?