Preloaded Sounds work in Studio but don't work Online?

I've been using another bit of code for reference to make a preloaded sound script. I tested it, and it worked in Studio. However, no sounds were made in Online mode. I'm trying to get the sounds working in Online like they do in Studio.

while true do wait(1)
local library = game.ServerStorage.SoundContainer:GetChildren() 
    for i = 1, #library do
        if library[i]:IsA("Sound") then
            game:GetService("ContentProvider"):Preload(library[i].SoundId)
    end
end
print("Sounds ready")

local Derezzed = Instance.new("Sound")
Derezzed.Parent = game.Workspace
Derezzed.SoundId = "http://www.roblox.com/asset/?id=244726378"
Derezzed:Play()
Derezzed.Volume = 1
print("Derezzed successful!")
wait(5)
Derezzed:Pause()
local Fall = Instance.new("Sound")
Fall.Parent = game.Workspace
Fall.SoundId = "http://www.roblox.com/asset/?id=188991458"
Fall:Play()
Fall.Volume = 1
wait(5)
Fall:Pause()
print("Fall successful!")
end