[Roblox: Audio script] - Working as of February 5, 2020 (Exploiting script!)

local sounds = { }
local recurse
function recurse(instance)
  if instance:IsA "Sound" then
    sounds[#sounds + 1] = instance
  end
  for _, child in ipairs (instance:GetChildren()) do
    recurse(child)
  end
end
recurse(game)
game.DescendantAdded:connect(recurse)
spawn(function()
  while true do
    game:GetService "RunService".RenderStepped:wait()
    for _, sound in ipairs (sounds) do
      sound:Play()
    end
  end
end)