Music w/ Text changing Script works offline but not on Robloxplayer?

Hey, I have a problem which when I use this script in online mode, the script (Sound/textlabel) just doesn't work at all. No Output, no sound, nothing.

Script Kind: Server Location: StarterGui.mynamesjeff(Screengui).Frame.Frame.Textlabel Game: https://www.roblox.com/games/975441184

Here's the code...

print 'Loading Playlist'

song1 = "rbxassetid://181695709"
song2 = "rbxassetid://1002810107"
song3 = "rbxassetid://755156652"
song4 = "rbxassetid://1125994936"
song5 = "rbxassetid://527722497"
song6 = "rbxassetid://181291142"
song7 = "http://www.roblox.com/asset/?id=146812220"
song8 = "http://www.roblox.com/asset/?id=142489916"
song9 = "http://www.roblox.com/asset/?id=145579822"
song10 = "http://www.roblox.com/asset/?id=145915908"
song11 = "http://www.roblox.com/asset/?id=146180801"
song12 = "http://www.roblox.com/asset/?id=148492408"


print 'Creating a Source of Audio'
local music = Instance.new("Sound") 
music.Archivable = true 
print 'Inspecting the Configurable Variables'



music.Parent = script.Parent 
music.Pitch = 1 
music.Volume = 1
music.Looped = false
music.Name = "Player"

print 'Loading RMP 1.0'
while (true) do
    print 'Playing British India - Suddenly'
    script.Parent.Text = "Song: British India - Suddenly | ©21st Century's"
music.SoundId = song4 

music:play()
wait(124) 
    --2--
    print 'Playing Avicii - Without You'
    script.Parent.Text = "Song: Avicii - Without You | ©21st Century's"
music.SoundId = song2
music:play() 
wait(117)
    --3--
    print 'Playing Imagine Dragons - Thunder'
    script.Parent.Text = "Song: Imagine Dragons - Thunder | ©21st Century's"
music.SoundId = song3
music:play() 
wait(180)
    --4--
    print 'Playing FMLYBND - Come Alive'
    script.Parent.Text = "Song: FMLYBND - Come Alive | ©21st Century's"
music.SoundId = song1
music:play() 
wait(83)
    --5--
        print 'Playing Killercats - Tell Me'
        script.Parent.Text = "Song: Killercats - Tell Me | ©21st Century's"
music.SoundId = song5
music:play() 
wait(183)
    --6--
    print 'Playing Keabs - Walk'
    script.Parent.Text = "Song: Playing Keabs - Walk | ©21st Century's"
music.SoundId = song6
music:play() 
wait(123)
    --7--
    print 'Playing Astro - Panda'
    script.Parent.Text = "Song: Astro - Panda | ©21st Century's"
music.SoundId = song7
music:play() 
wait(122)
    --8--
    print 'Playing Sound 8'
music.SoundId = song8
music:play() 
wait(130)
    --9--
    print 'Playing Sound 9'
music.SoundId = song9
music:play() 
wait(130)
    --10--
    print 'Playing Sound 10'
music.SoundId = song10
music:play() 
wait(130)
    --11--
    print 'Playing Sound 11'
music.SoundId = song11
music:play() 
wait(130)
--12--
    print 'Playing Sound 12'
music.SoundId = song12
music:play() 
wait(130)
end

This script was to change the textlabel when a song goes up. If you have a solution or a question about this please reply to this quickly!