How to add custom footsteps and remove the old roblox footsteps?

Is there a way to make custom footsteps in roblox? There was a script I tried to use, but it was 2014 -- outdated.

local player = script.Parent.Parent
repeat wait() until player.Character

--Remove ROBLOX Sounds:
if player.Character:FindFirstChild('Sound') then
	player.Character.Sound:Destroy()
end
for i,object in pairs(player.Character.Head:getChildren()) do
	if object:IsA("Sound") then
		object:Destroy()
	end
end

--Sound Data:
local sound = {
	current = nil
}

--Each table in this list contains the following data (in this order): string SoundId, number Pitch, number Volume, boolean Looped
sound.list = {
	fsConcrete = {"rbxasset://sounds/grassstone2.ogg",1.4,.4,true},
	fsCorrodedMetal = {"rbxasset://sounds/metalgrass.ogg",1.4,.3,true},
	fsDiamondPlate = {"rbxasset://sounds/metalgrass3.ogg",1.4,.3,true},
	  fsMetal = {"rbxasset://sounds/metalgrass3.ogg",1.4,.3,true},
	fsFoil = {"rbxasset://sounds/metal3.ogg",1.4,.3,true},
	fsGrass = {"http://www.roblox.com/asset/?id=16720281",1.8,.4,true}, --pitch was 1.4, now 2 so it sounds better. ~maelstronomer
	fsIce = {"rbxasset://sounds/icestone.ogg",1.4,.5,true},
	fsPlastic = {"http://www.roblox.com/asset/?id=121293429",1.8,.3,true}, --131436155,.82,.65 --15174250 old --121293429 roblox
	fsSlate = {"rbxasset://sounds/grassstone3.ogg",1.35,.4,true},
	fsWood = {"rbxasset://sounds/woodgrass3.ogg",1.4,.5,true},
	  fsWoodPlanks = {"rbxasset://sounds/woodgrass3.ogg",1.4,.5,true},
	fsSmoothPlastic = {"http://www.roblox.com/asset/?id=121293429",1.8,.3,true}, --131436155,.82,.65 --15174250 old --121293429 roblox
	
	fsWater = {"http://www.roblox.com/asset/?id=130778103",1.6,.4,true}, --{"http://www.roblox.com/asset/?id=133772590",1,.5,true},--{"http://www.roblox.com/asset/?id=28604165",2.6,.1,true}, --133761592
	fsSnow = {"http://www.roblox.com/asset/?id=19326880",1.2,.5,true},
	
	jump = {"http://www.roblox.com/asset/?id=161619979",1,.3,false}, --{"rbxasset://sounds/swoosh.wav",1,.3,false},


	fsAir = {'',1,0,false},
	
	fsBrick = {"rbxasset://sounds/grassstone3.ogg",1.4,.4,true}, --{"rbxasset://sounds/grassstone2.ogg",1.4,.4,true},
	  fsCobblestone = {"rbxasset://sounds/grassstone3.ogg",1.4,.4,true}, --{"rbxasset://sounds/grassstone2.ogg",1.4,.4,true},
	fsSand = {"http://www.roblox.com/asset/?id=131245944",1.4,.1,true},
	fsFabric = {"http://www.roblox.com/asset/?id=133705377",1.65,.5,true}, --133705377 --rbxasset://sounds/woodgrass3.ogg
	fsGranite = {"rbxasset://sounds/grassstone3.ogg",1.35,.35,true},
	fsMarble = {"rbxasset://sounds/grassstone2.ogg",1.55,.38,true}, --{"rbxasset://sounds/grassstone3.ogg",1.43,.43,true},
	fsPebble = {"http://www.roblox.com/asset/?id=133761546",1.5,.3,true},--{"rbxasset://sounds/icestone.ogg",1.2,.5,true},  --131620285? --133761546
}

math.randomseed(tick()) --for the random function later ~maelstronomer
--Create Sounds:
for name,data in pairs(sound.list) do
	local s = Instance.new("Sound",player.Character.Head)
	s.Name = name
	s.SoundId = data[1]
	s.Pitch = data[2]
	s.Volume = data[3]*.2 --quiter footsteps because I found them too loud
	s.Looped = data[4]
	--Replaces the ID with the actual sound Object in the above table:
	sound.list[name] = {s,data[2]}
end

--Floor Data:
local ground = {
	part = nil,
	position = nil
}

--Detect Floor:
ground.detect = function()
	--Ignores the player and their camera which allows you to add local parts onto the character without messing this up.
	if player.Character:FindFirstChild('Torso') then
		local ignore = {player.Character,workspace.CurrentCamera}
		local ray = Ray.new(player.Character.Torso.Position,Vector3.new(0,-3.01,0))
		local hit,pos = workspace:FindPartOnRayWithIgnoreList(ray,ignore)
		ground.part = hit
		ground.position = pos
	end
end

local isWalking = false

--Tell the below loop that the player is walking:
player.Character.Humanoid.Running:connect(function(speed)
	if speed > 6 then
		isWalking = true
	else
		isWalking = false
	end
end)

--Play Jump Sound:
player.Character.Humanoid.Jumping:connect(function(state)
	if not script:FindFirstChild('last_jumped') then
		
		local last_jumped = Instance.new('BoolValue',script)
		last_jumped.Name = 'last_jumped'
		game.Debris:AddItem(last_jumped,.5)
		
		ground.detect()
		if ground.part then
			if player.Character.Head:FindFirstChild('jump') then
				player.Character.Head.jump.Pitch= math.random((sound.list.jump[2]-.075)*100,(sound.list.jump[2]+.075)*100)/100
				sound.list.jump[1]:Play()
			end
		end
	end
end)

--Loop that Does things:
while wait(.35) do
	--Get the ground:
	ground.detect()
	
	--Play and stop sounds:
	if isWalking and ground.part then
		
		--Gets the name of the material without spaces or detects whether the part is called 'Water' or 'Snow':
		local mat
		if ground.part.Name == "Water" or ground.part.Name == "Snow" or ground.part.Name == 'Air' then
			mat = ground.part.Name
		--elseif ground.part.BrickColor == BrickColor.new('Light stone grey') and ground.part.Material=='Sand' then
		--	mat = 'Snow'
		else
			mat = string.sub(tostring(ground.part.Material),15)
			mat = string.gsub(mat, "%s+", "")
		end
		--Plays the sound:
		if sound.current ~= sound.list["fs"..mat][1] then
			if sound.current then sound.current:Stop() end
			sound.current = sound.list["fs"..mat][1]
			sound.current:Play()
		end
		--Determines the pitch of the sound based on the original pitch and the character's walkspeed (where 16 is no change).
		sound.current.Pitch= math.random((sound.list["fs"..mat][2]-.4)*100,(sound.list["fs"..mat][2]+.4)*100)/100
		sound.current.Pitch = sound.current.Pitch/(16/player.Character.Humanoid.WalkSpeed)
	elseif sound.current then
		sound.current:Stop()
		sound.current = nil
	end
end

I want to make my own custom sounds. . . Can someone help me?