diff --git a/powerball.lua b/powerball.lua
index 0b65158..9534808 100644
--- a/powerball.lua
+++ b/powerball.lua
@@ -1,8 +1,20 @@
+stone_sounds = {}
+stone_sounds.footstep = {name="stone_walk", gain=1.0}
+stone_sounds.dug = {name="stone_break", gain=1.0}
+stone_sounds.place = {name="block_place", gain=1.0}
+glass_sounds = {}
+glass_sounds.footstep = {name="glass_walk", gain=1.0}
+glass_sounds.dug = {name="glass_break", gain=1.0}
+glass_sounds.place = {name="block_place", gain=1.0}
+wood_sounds = {}
+wood_sounds.footstep = {name="wood_walk", gain=1.0}
+wood_sounds.dug = {name="wood_break", gain=1.0}
+wood_sounds.place = {name="block_place", gain=1.0}
 minetest.register_node("portalgun:powerballspawner", {
 	description = "Power ball spawner" ,
-	tiles = {"default_steel_block.png","default_steel_block.png","default_steel_block.png","default_steel_block.png","default_steel_block.png","portalgun_powerballspawner.png"},
+	tiles = {"steel.png","steel.png","steel.png","steel.png","steel.png","portalgun_powerballspawner.png"},
 	groups = {cracky=2},
-	sounds = default.node_sound_glass_defaults(),
+	sounds = glass_sounds,
 	is_ground_content = false,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
@@ -29,9 +41,9 @@ minetest.register_node("portalgun:powerballspawner", {
 
 minetest.register_node("portalgun:powerballspawner2", {
 	description = "Power ball spawner (spawn on activate)" ,
-	tiles = {"default_steel_block.png","default_steel_block.png","default_steel_block.png","default_steel_block.png","default_steel_block.png","portalgun_powerballspawner.png^[colorize:#aaaa0055"},
+	tiles = {"steel.png","steel.png","steel.png","steel.png","steel.png","portalgun_powerballspawner.png^[colorize:#aaaa0055"},
 	groups = {cracky=2,mesecon=1},
-	sounds = default.node_sound_glass_defaults(),
+	sounds = glass_sounds,
 	is_ground_content = false,
 	paramtype2 = "facedir",
 	on_place = minetest.rotate_node,
@@ -125,7 +137,7 @@ minetest.register_node("portalgun:powerballtarget", {
 	tiles = {"portalgun_powerballstarget.png"},
 	groups = {mesecon = 2,cracky=2},
 	mesecons = {receptor = {state = "off"}},
-	sounds = default.node_sound_stone_defaults(),
+	sounds = stone_sounds,
 	is_ground_content = false,
 	on_timer = function (pos, elapsed)
 		mesecon.receptor_off(pos)