diff --git a/README.txt b/README.txt
index 1970804..df244fe 100644
--- a/README.txt
+++ b/README.txt
@@ -9,8 +9,8 @@ ShadowNinja (MIT)
 sofar (sofar@foo-projects.org) (MIT)
 Various Minetest developers and contributors (MIT)
 
-Authors of media (textures)
----------------------------
+Authors of media
+----------------
 BlockMen (CC BY-SA 3.0):
 All textures not mentioned below.
 
@@ -26,6 +26,23 @@ tnt_blast.png
 paramat (CC BY-SA 3.0)
 tnt_tnt_stick.png - Derived from a texture by benrob0329.
 
+TumeniNodes (CC0 1.0)
+tnt_explode.ogg
+renamed, edited, and converted to .ogg from Explosion2.wav
+by steveygos93 (CC0 1.0)
+<https://freesound.org/s/80401/>
+
+tnt_ignite.ogg
+renamed, edited, and converted to .ogg from sparkler_fuse_nm.wav
+by theneedle.tv (CC0 1.0)
+<https://freesound.org/s/316682/>
+
+tnt_gunpowder_burning.ogg
+renamed, edited, and converted to .ogg from road flare ignite burns.wav
+by frankelmedico (CC0 1.0)
+<https://freesound.org/s/348767/>
+
+
 Introduction
 ------------
 This mod adds TNT to Minetest. TNT is a tool to help the player
diff --git a/init.lua b/init.lua
index 3efc6ec..0cf3f09 100644
--- a/init.lua
+++ b/init.lua
@@ -396,7 +396,7 @@ function tnt.boom(pos, def)
 		minetest.set_node(pos, {name = "tnt:boom"})
 	end
 	local sound = def.sound or "tnt_explode"
-	minetest.sound_play(sound, {pos = pos, gain = 1.5,
+	minetest.sound_play(sound, {pos = pos, gain = 2.5,
 			max_hear_distance = math.min(def.radius * 20, 128)})
 	local drops, radius = tnt_explode(pos, def.radius, def.ignore_protection,
 			def.ignore_on_blast, owner, def.explode_center)
diff --git a/license.txt b/license.txt
index 2c57df3..e59ec6e 100644
--- a/license.txt
+++ b/license.txt
@@ -26,9 +26,10 @@ DEALINGS IN THE SOFTWARE.
 For more details:
 https://opensource.org/licenses/MIT
 
+===================================
 
-Licenses of media (textures)
-----------------------------
+Licenses of media
+-----------------
 
 Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
 Copyright (C) 2014-2016 BlockMen
@@ -64,3 +65,36 @@ rights may limit how you use the material.
 
 For more details:
 http://creativecommons.org/licenses/by-sa/3.0/
+
+====================================================
+
+CC0 1.0 Universal (CC0 1.0) Public Domain Dedication 
+for audio files (found in sounds folder)
+TumeniNodes
+steveygos93
+theneedle.tv
+frankelmedico
+
+No Copyright
+
+The person who associated a work with this deed has dedicated the work to the public domain
+by waiving all of his or her rights to the work worldwide under copyright law, including all
+related and neighboring rights, to the extent allowed by law.
+
+You can copy, modify, distribute and perform the work, even for commercial purposes, all
+without asking permission. See Other Information below.
+
+In no way are the patent or trademark rights of any person affected by CC0, nor are the
+rights that other persons may have in the work or in how the work is used, such as publicity
+or privacy rights.
+
+Unless expressly stated otherwise, the person who associated a work with this deed makes no
+warranties about the work, and disclaims liability for all uses of the work, to the fullest
+extent permitted by applicable law.
+
+When using or citing the work, you should not imply endorsement by the author or the affirmer.
+
+This license is acceptable for Free Cultural Works.
+For more Information:
+https://creativecommons.org/publicdomain/zero/1.0/
+
diff --git a/sounds/tnt_explode.ogg b/sounds/tnt_explode.ogg
index 1748bc5..e00a16c 100644
Binary files a/sounds/tnt_explode.ogg and b/sounds/tnt_explode.ogg differ
diff --git a/sounds/tnt_gunpowder_burning.ogg b/sounds/tnt_gunpowder_burning.ogg
index 5c5bfaf..8581c2d 100644
Binary files a/sounds/tnt_gunpowder_burning.ogg and b/sounds/tnt_gunpowder_burning.ogg differ
diff --git a/sounds/tnt_ignite.ogg b/sounds/tnt_ignite.ogg
index 3686fcd..1a7062e 100644
Binary files a/sounds/tnt_ignite.ogg and b/sounds/tnt_ignite.ogg differ