Bundled and colored cables? [Lua][Help]

I am a supernoob when it comes to computer craft.

Can someone explain to me basicly everything they can about bundled cables and the colored cables? I am trying to make one of those impressive music block songs on my server, but i have absoulutly no clue how they work?

it would be great if you could include a simple program to try
commands
and layouts

Thanks so much for your help.

Bundled cables can be used for rednet.
For example:

rednet.open("right")
rednet.broadcast("Sending message to all computers")

This code will allow the right side of the computer to be allowed for networking and the second line is broadcasting or sending the message to all computers that are open for networking.

But can you explain how i could like connect those cables to noteblocks or something? And what kind of commands i'd use?

I made an api and programs for that, you can get them here.
If you still want to do it by yourself, you should check the wiki, specially the redstone api.

You sir, Just made my day.
Thank you mysticT