Local script

-- Must be inside the Sound in StarterGui

game.ReplicatedStorage.PlayMusic.OnClientEvent:Connect(function(sound) -- PlayMusic is the name of the RemoteEvent. Change it if you have a different name.
    if script.Parent.SoundId ~= sound then
        script.Parent:Stop()
        script.Parent.SoundId = sound
        script.Parent:Play()
    end
end)