How do I make a radio station like the one in Vibe Station?

As said in the title, How do I make a radio like the one in Vibe Station? I want it to be modular, like you could put values with song ids in different folders for different stations. I want to have folders for different stations so if you put more you get more stations on the radio I'm not asking for code, I'm asking how do i make a script that does the following above?

I've made a script trying to replicate this:

local channels = {}
local SoundIndex = 0
local Index = script.Parent.Channel
local music = script.Parent.MusicPlayer
local soundinfo = game:GetService("MarketplaceService")
for i, v in pairs(script.Parent.channels:GetChildren()) do
	table.insert(channels, v)
end


local function main()
	for i, v in pairs(script.Parent.channels:GetDescendants()) do
		if v.Parent == channels[Index.Value] then
			Index:GetPropertyChangedSignal("Value"):Connect(function()
				SoundIndex = SoundIndex + 1
				script.Parent.MusicPlayer.SoundId = "rbxassetid://" .. v.Value[SoundIndex]
				music:Play()
				music.Ended:Wait()
				wait(0.5)
			end)
			
		end
	end
end

local function forward()
	Index.Value = Index.Value + 1
	if Index.Value == #channels + 1 then
		Index.Value = 1
	end
	print(Index.Value)
	main()
end


local function backward()
	Index.Value = Index.Value - 1
	if Index.Value <= 0 then
		Index.Value = #channels
	end
	print(Index.Value)
	main()
end

script.Parent.Frame.Forward.MouseButton1Click:Connect(forward)
script.Parent.Frame.Backward.MouseButton1Click:Connect(backward)

But it doesn't work. Again, all I'm asking for is how do I make a script that does something like the radio in vibe station.