Post a screenshot of the greyed out option.with all .wav files the 3d sound option is greyed out
imgur.com/a/04drIPost a screenshot of the greyed out option.
I did that and i could then change it to 3d sound but now when i play the 3d sound with triggers i hear nothing, i'm playing the sound everytime a specific unit attacks, i can hear the sound perfectly when it's not a 3d sound, but when 3d sound is turned on i hear nothingTry setting the channels to 1? That's the only difference I have on my sounds compared to yours.