diff --git a/core/assets/sounds/conveyor.ogg b/core/assets/sounds/conveyor.ogg
new file mode 100644
index 0000000000..d61775acc5
Binary files /dev/null and b/core/assets/sounds/conveyor.ogg differ
diff --git a/core/assets/sounds/machine.ogg b/core/assets/sounds/machine.ogg
new file mode 100755
index 0000000000..d6f7aceae8
Binary files /dev/null and b/core/assets/sounds/machine.ogg differ
diff --git a/core/assets/sounds/spray.ogg b/core/assets/sounds/spray.ogg
new file mode 100644
index 0000000000..f47dbe236b
Binary files /dev/null and b/core/assets/sounds/spray.ogg differ
diff --git a/core/convert_sounds.sh b/core/convert_sounds.sh
new file mode 100755
index 0000000000..14d4ef881e
--- /dev/null
+++ b/core/convert_sounds.sh
@@ -0,0 +1,5 @@
+#convert from stereo to mono
+for i in assets/sounds/*.ogg; do
+  echo $i
+  ffmpeg -i "$i" -y -ac 1 "$i"
+done
diff --git a/core/src/io/anuke/mindustry/game/LoopControl.java b/core/src/io/anuke/mindustry/game/LoopControl.java
index e6b7dffae2..3924a1c28c 100644
--- a/core/src/io/anuke/mindustry/game/LoopControl.java
+++ b/core/src/io/anuke/mindustry/game/LoopControl.java
@@ -31,8 +31,6 @@ public class LoopControl{
 
             boolean play = data.curVolume > 0.01f;
             float pan = Mathf.isZero(data.total, 0.0001f) ? 0f : sound.calcPan(data.sum.x / data.total, data.sum.y / data.total);
-            //Log.info(pan);
-            //TODO calc pan
             if(data.soundID <= 0){
                 if(play){
                     data.soundID = sound.loop(data.curVolume, 1f, pan);