Update attribution of sounds

Also: Add myself to CREDITS.md

CREDITS.md

@@ -95,6 +95,7 @@
 * anarquimico
 * TheOnlyJoeEnderman
 * Ranko Saotome
+* Gregor Parzefall
 
 ## MineClone5
 * kay27

mods/CORE/mcl_sounds/README.txt

@@ -18,35 +18,15 @@ Glass breaking sounds (CC BY 3.0):
 default_tool_breaks.ogg by EdgardEdition (CC BY 3.0), http://www.freesound.org/people/EdgardEdition
 
 Mito551 (sounds) (CC BY-SA 3.0):
-  default_dig_choppy.ogg
-  default_dig_cracky.ogg
-  default_dig_crumbly.1.ogg
-  default_dig_crumbly.2.ogg
+  default_dig_crumbly.ogg
   default_dig_oddly_breakable_by_hand.ogg
-  default_dug_node.1.ogg
-  default_dug_node.2.ogg
-  default_grass_footstep.1.ogg
-  default_grass_footstep.2.ogg
-  default_grass_footstep.3.ogg
-  default_gravel_footstep.1.ogg
-  default_gravel_footstep.2.ogg
-  default_gravel_footstep.3.ogg
-  default_gravel_footstep.4.ogg
-  default_grass_footstep.1.ogg
-  default_place_node.1.ogg
-  default_place_node.2.ogg
-  default_place_node.3.ogg
-  default_place_node_hard.1.ogg
-  default_place_node_hard.2.ogg
-  default_hard_footstep.1.ogg
-  default_hard_footstep.2.ogg
-  default_hard_footstep.3.ogg
-  default_sand_footstep.1.ogg
-  default_sand_footstep.2.ogg
-  default_wood_footstep.1.ogg
-  default_wood_footstep.2.ogg
-  default_dirt_footstep.1.ogg
-  default_dirt_footstep.2.ogg
+  default_dug_node.*.ogg
+  default_grass_footstep.*.ogg
+  default_gravel_footstep.*.ogg
+  default_place_node.*.ogg
+  default_place_node_hard.*.ogg
+  default_wood_footstep.*.ogg
+  default_dirt_footstep.*.ogg
   default_glass_footstep.ogg
 
 Metal sounds:
@@ -54,35 +34,64 @@ Metal sounds:
   - https://www.freesound.org/people/yadronoff/sounds/320397/
   default_dug_metal.*.ogg - Iwan Gabovitch - qubodup - CC0
   - http://opengameart.org/users/qubodup
-  default_metal_footstep.*.ogg - Ottomaani138 - CC0
-  - https://www.freesound.org/people/Ottomaani138/sounds/232692/
+  default_metal_footstep.*.ogg - (CC0 1.0) - CC0 1.0
+  - https://freesound.org/people/mypantsfelldown/sounds/398937/
   default_place_node_metal.*.ogg - Ogrebane - CC0
   - http://opengameart.org/content/wood-and-metal-sound-effects-volume-2
 
-AGFX (CC BY 3.0)
+AGFX (CC BY 3.0):
 https://www.freesound.org/people/AGFX/packs/1253/
-  default_water_footstep.1.ogg
-  default_water_footstep.2.ogg
-  default_water_footstep.3.ogg
-(default_water_footstep.4.ogg is silent)
+  default_water_footstep.*.ogg
 
-blukotek (CC0 1.0)
+blukotek (CC0 1.0):
 https://www.freesound.org/people/blukotek/sounds/251660/
   default_dig_snappy.ogg
 
-sonictechtonic (CC BY 3.0)
+sonictechtonic (CC BY 3.0):
 https://www.freesound.org/people/sonictechtonic/sounds/241872/
   player_damage.ogg
 
-Voxelands project <http://www.voxelands.com/> (CC BY-SA 3.0)
+Sheyvan (CC0 1.0):
+https://freesound.org/people/Sheyvan/sounds/476113/
+  default_dig_choppy.*.ogg
+
+lolamadeus (CC0 1.0):
+https://freesound.org/people/lolamadeus/sounds/179341/
+  default_gravel_dig.*.ogg
+  default_gravel_dug.*.ogg
+
+Benboncan (CC BY 3.0):
+https://freesound.org/people/Benboncan/sounds/71823/
+  default_dig_cracky.*.ogg
+
+Erdie (CC BY 3.0):
+https://freesound.org/people/Erdie/sounds/41579/
+  default_hard_footstep.*.ogg
+
+worthahep88 (CC0 1.0):
+https://freesound.org/people/worthahep88/sounds/319224/
+  default_sand_footstep.*.ogg
+
+dheming (CC BY 3.0):
+https://freesound.org/people/dheming/sounds/268023/
+  default_ice_dig.*.ogg
+
+InspectorJ (CC BY 3.0):
+https://freesound.org/people/InspectorJ/sounds/416967/
+  default_ice_footstep.*.ogg
+
+Angel_Perez_Grandi (CC BY 3.0):
+https://freesound.org/people/Angel_Perez_Grandi/sounds/49190/
+  default_ice_dug.ogg
+
+Voxelands project <http://www.voxelands.com/> (CC BY-SA 3.0):
   mcl_sounds_place_node_water.ogg
   mcl_sounds_dug_water.ogg
 
 (Note: Artists from the Voxelands project include: sdzen, darkrose, sapier,
       Tom Peter, Telaron, juskiddink)
 
-Michel Baradari <https://opengameart.org/content/lava-splash> (CC BY 3.0)
-
+Michel Baradari <https://opengameart.org/content/lava-splash> (CC BY 3.0):
   default_place_node_lava.ogg
 
 Adam_N (CC0 1.0):
@@ -90,7 +99,7 @@ Adam_N (CC0 1.0):
     Source: <https://www.freesound.org/people/Adam_N/sounds/346692/>
 
 Alecia Shepherd (CC BY-SA 4.0):
-  mcl_sounds_cloth.ogg
+  mcl_sounds_cloth.*.ogg
     Source: SnowSong sound and music pack <https://opengameart.org/content/snowsong-sound-and-music-pack>
 
 Unknown authors (WTFPL):