diff --git a/api.lua b/api.lua
index fad7029..7888b53 100644
--- a/api.lua
+++ b/api.lua
@@ -146,3 +146,13 @@ modMinerTrade.getDetachedInventory = function(playername)
 	
 	return newInv
 end
+
+modMinerTrade.showInventory = function(playername, ownername, title)
+    local inv = modMinerTrade.getDetachedInventory(ownername)
+    minetest.sound_play("sfx_alert", {player=playername, max_hear_distance=5.0,})
+	minetest.show_formspec(
+		playername,
+		"safe_"..ownername,
+		modMinerTrade.getFormspec(ownername, title)
+	)
+end
diff --git a/item_atm.lua b/item_atm.lua
index fd8332e..1babe05 100644
--- a/item_atm.lua
+++ b/item_atm.lua
@@ -86,16 +86,13 @@ minetest.register_node("minertrade:atm", {
 		local opentime = tonumber(meta:get_string("opentime")) or 0
 		local now = os.time() --Em milisegundos
 		if now >= opentime or minetest.get_player_privs(playername).server then
-			local inv = modMinerTrade.getDetachedInventory(playername)
-			minetest.show_formspec(
-				playername,
-				"safe_"..playername,
-				modMinerTrade.getFormspec(
-					playername,
+			modMinerTrade.showInventory(
+					playername, 
+					playername, 
 					modMinerTrade.translate("PUBLIC ATM - Account of '%s':"):format(playername)
 				)
-			)
 		else
+			minetest.sound_play("sfx_failure", {player=playername, max_hear_distance=5.0,})
 			minetest.chat_send_player(playername, 
 				core.colorize("#00ff00", "["..modMinerTrade.translate("ATM").."]: ")
 				..modMinerTrade.translate("The ATM will only run %02d seconds after it is installed!"):format(opentime-now)
diff --git a/item_miner_cash.lua b/item_miner_cash.lua
index 1a3d9ec..2b4a295 100644
--- a/item_miner_cash.lua
+++ b/item_miner_cash.lua
@@ -99,46 +99,42 @@ minetest.register_craftitem("minertrade:creditcard", {
 	inventory_image = "obj_credit_card.png",
 	--stack_max=9, --Acumula 9 por slot
 	groups = {cash=1, trade=1},
-on_use = function(itemstack, player)
+	on_use = function(itemstack, player)
 		local playername = player:get_player_name()
-local meta = itemstack:get_meta()
+		local meta = itemstack:get_meta()
 		local old_data = minetest.deserialize(itemstack:get_metadata())
 		if old_data then
 			meta:from_table({ fields = old_data })
 		end
 		local tmpDatabase = meta:to_table().fields
-   if type(tmpDatabase.ownername)~="string" or tmpDatabase.ownername=="" then
-      tmpDatabase.ownername = playername
-      tmpDatabase.description = modMinerTrade.translate("CREDIT CARD of '%s'"):format(tmpDatabase.ownername)
-      local invPlayer = player:get_inventory()
-      local new_stack
-      local count = itemstack:get_count()
-      itemstack:set_count(count - 1)
-      new_stack = ItemStack("minertrade:creditcard")
-      new_stack:get_meta():from_table({ fields = tmpDatabase })
-      if invPlayer:room_for_item("main", new_stack) then
-         invPlayer:add_item("main", new_stack)
-      else
-         minetest.add_item(player:get_pos(), new_stack)
-      end
-      minetest.chat_send_player(playername,
-      				core.colorize("#00ff00", "["..modMinerTrade.translate("CREDIT CARD").."]: ")
-      				..modMinerTrade.translate("Your name has been saved to this credit card. Anyone using this credit card will be able to access the '%s' bank account."):format(tmpDatabase.ownername)
-      )
-      minetest.sound_play("sfx_alert", {object=player, max_hear_distance=5.0,})
-      return itemstack
-   end
-
-   local inv = modMinerTrade.getDetachedInventory(tmpDatabase.ownername)
-			minetest.show_formspec(
-				playername,
-				"safe_"..tmpDatabase.ownername,
-				modMinerTrade.getFormspec(
-					tmpDatabase.ownername,
-					modMinerTrade.translate("ACCOUNT BANK of '%s':"):format(tmpDatabase.ownername)
-				)
+		
+		if type(tmpDatabase.ownername)~="string" or tmpDatabase.ownername=="" then
+			tmpDatabase.ownername = playername
+			tmpDatabase.description = modMinerTrade.translate("CREDIT CARD of '%s'"):format(tmpDatabase.ownername)
+			local invPlayer = player:get_inventory()
+			local new_stack
+			local count = itemstack:get_count()
+			itemstack:set_count(count - 1)
+			new_stack = ItemStack("minertrade:creditcard")
+			new_stack:get_meta():from_table({ fields = tmpDatabase })
+			if invPlayer:room_for_item("main", new_stack) then
+				invPlayer:add_item("main", new_stack)
+			else
+				minetest.add_item(player:get_pos(), new_stack)
+			end
+			minetest.chat_send_player(playername,
+				core.colorize("#00ff00", "["..modMinerTrade.translate("CREDIT CARD").."]: ")
+				..modMinerTrade.translate("Your name has been saved to this credit card. Anyone using this credit card will be able to access the '%s' bank account."):format(tmpDatabase.ownername)
 			)
-   --return itemstack
+			minetest.sound_play("sfx_alert", {object=player, max_hear_distance=5.0,})
+			return itemstack
+		end
+		modMinerTrade.showInventory(
+			playername, 
+			tmpDatabase.ownername, 
+			modMinerTrade.translate("ACCOUNT BANK of '%s':"):format(tmpDatabase.ownername)
+		)
+		return itemstack
 	end,
 })
 
diff --git a/item_strongbox.lua b/item_strongbox.lua
index 63cc710..775a244 100644
--- a/item_strongbox.lua
+++ b/item_strongbox.lua
@@ -42,22 +42,20 @@ minetest.register_node("minertrade:strongbox", {
 			local opentime = tonumber(meta:get_string("opentime")) or 0
 			local now = os.time() --Em milisegundos
 			if now >= opentime or minetest.get_player_privs(playername).server then
-				local inv = modMinerTrade.getDetachedInventory(ownername)
-				minetest.show_formspec(
-					playername,
-					"safe_"..ownername,
-					modMinerTrade.getFormspec(
-						ownername,
-						modMinerTrade.translate("STRONGBOX owned by '%s':"):format(ownername)
-					)
+				modMinerTrade.showInventory(
+					playername, 
+					ownername, 
+					modMinerTrade.translate("STRONGBOX owned by '%s':"):format(ownername)
 				)
 			else
+				minetest.sound_play("sfx_failure", {player=playername, max_hear_distance=5.0,})
 				minetest.chat_send_player(playername, 
 					core.colorize("#00ff00", "["..modMinerTrade.translate("STRONGBOX").."]: ")
 					..modMinerTrade.translate("The safe is going to work %02d seconds after it is installed!"):format(opentime-now)
 				)
 			end
 		else
+			minetest.sound_play("sfx_failure", {player=playername, max_hear_distance=5.0,})
 			minetest.chat_send_player(playername, 
 				core.colorize("#00ff00", "["..modMinerTrade.translate("STRONGBOX").."]: ")
 				..modMinerTrade.translate("You do not have access to the safe belonging to '%s'!"):format(ownername)