I realize your post is from a couple of years ago, but this issue you've mentioned about the looping "battlefield explosions" sound effect in Eden Editor for ARMA 3 is a common one. It sounds like you want the effect to terminate after the initial play, rather than loop indefinitely.
Interestingly enough, I recently found this site which offers a range of sounds, from natural to downright goofy. They even have a Fart Soundboard you can use online, if you can believe that! I mention this to highlight the fact that if you want a variety of sound options for your missions, today's technology offers you a plethora of choices.
