add custom sfx when casting fishing rod

fishing.lua

@@ -391,7 +391,7 @@ local use_rod = function(itemstack, player, pointed_thing)
 		local dir = player:get_look_dir()
 		local pos = {x = playerpos.x, y = playerpos.y + 1.5, z = playerpos.z}
 
-		minetest.sound_play("default_dig_crumbly",
+		minetest.sound_play("ethereal_casting_rod",
 			{pos = pos, gain = 0.4, max_hear_distance = 16}, true)
 
 		-- place actual bob

license.txt

@@ -46,3 +46,7 @@ Free textures from epicwannehz on DeviantArt
 
 Notice: Most texture authors are written inside code as comments, anything with no name
 I have more than likely created myself :)
+
+
+Royalty Free SFX from dreamstime.com:
+  ethereal_casting_rod.ogg