diff --git a/README.md b/README.md
index 3c170d3..6bfaaf6 100644
--- a/README.md
+++ b/README.md
@@ -36,9 +36,8 @@ CC BY 3.0
 * scifi_nodes_access_granted https://freesound.org/people/TheBuilder15/sounds/415762/
 * scifi_nodes_access_refused https://freesound.org/people/RICHERlandTV/sounds/216090/
 
-CC BY-NC 3.0
-* scifi_nodes_door_mechanic.ogg primeval_polypod https://freesound.org/people/primeval_polypod/sounds/156507/
-* scifi_nodes_digicode.ogg https://freesound.org/people/Robinhood76/sounds/94933/
+CC0
+* scifi_nodes_digicode.ogg https://freesound.org/people/benjaminharveydesign/sounds/315921/
 
 
 # Contributors:
diff --git a/doors.lua b/doors.lua
index 16ed229..d54b716 100644
--- a/doors.lua
+++ b/doors.lua
@@ -40,10 +40,10 @@ minetest.register_alias("scifi_nodes:door4d","scifi_nodes:green_door_opened_top"
 
 -- This table now uses named parameters and more convenient variables names
 local doors = {
-	{base_name = "Doom", base_ingredient =  "doors:door_obsidian_glass", sound = "scifi_nodes_door_mechanic"},
-	{base_name = "black", base_ingredient = "doors:door_steel", sound = "scifi_nodes_door_mechanic"},
+	{base_name = "Doom", base_ingredient =  "doors:door_obsidian_glass", sound = "scifi_nodes_door_normal"},
+	{base_name = "black", base_ingredient = "doors:door_steel", sound = "scifi_nodes_door_normal"},
 	{base_name = "white", base_ingredient = "doors:door_glass", sound = "scifi_nodes_door_normal"},
-	{base_name = "green", base_ingredient = "doors:door_wood", sound = "scifi_nodes_door_mechanic"},
+	{base_name = "green", base_ingredient = "doors:door_wood", sound = "scifi_nodes_door_normal"},
 	{base_name = "blue", base_ingredient = "default:steelblock", sound = "scifi_nodes_door_normal"}
 }
 
diff --git a/sounds/scifi_nodes_digicode.ogg b/sounds/scifi_nodes_digicode.ogg
index 4b5d4e4..ae9a766 100644
Binary files a/sounds/scifi_nodes_digicode.ogg and b/sounds/scifi_nodes_digicode.ogg differ