In - Game sounds

Hey, guys i noticed that there are some cool sounds but, only if i click on a unit.
During the units are moving they do not make any sounds i know thats in some other Spring games too but ähm very strange.
Would it be possible to make walking sounds for the soldiers and driving sounds for the vehicles as well for planes and ships later? ^^

Planes have engine sounds already. As for the rest, well, we’ll see (the game lags a bit as it is, not sure what the sounds will do to that).