serverplay3D?
What's the difference between ServerPlay3D and ServerPlay2D?
Didn't work : /serverPlayer3D(clickPlantSound, %brick.getPosition());
If you're using a brick anyway, just use brickObject.playSound( clickPlantSound );
Didn't work. I even tried /getID and than did ID.playSound(clickPlantSound);
Have you made sure that Blockland can play sound in the first place, that your code is being run properly and that clickPlantSound exists (and your client is aware of it)?
Lets see: All volumes in options set to max and it plays other sounds. Code is being run properly. The sound exists. And how do I check if my client is aware of it?
Basically, did you create the sound datablock after the server started?