Unable to Destroy()?

I'm trying to figure out what's wrong with my script and why it's not removing the sound script as well as not changing the walkspeed within the Player after they respawn. Any help?

function onPlayerEntered(player)
	repeat wait () until player.Character ~= nil
	Player.Character.Sound:Destroy()
	Player.Character.Humanoid.WalkSpeed = 5
	player.CharacterAdded:connect(function (char)
		Player.Character.Sound:Destroy()
		Player.Character.Humanoid.WalkSpeed = 5		
	end)
end

game.Players.PlayerAdded:connect(onPlayerEntered)

Your 6th and 7th line "players" are capitalized, try that?

function onPlayerEntered(player)
    repeat wait () until player.Character ~= nil
    Player.Character.Sound:Destroy()
    Player.Character.Humanoid.WalkSpeed = 5
    Player.CharacterAdded:connect(function (char) -- you had 'player' not 'Player'
        Player.Character.Sound:Destroy()
        Player.Character.Humanoid.WalkSpeed = 5     
    end)
end

game.Players.PlayerAdded:connect(onPlayerEntered)

This should work now.

The first time a player joins, it removes the sound, then after that, it removes it again when the character joins the workspace. you just got to remove lines 3 and 4.