This might be a noob question but ill ask anyway.
So i just bought the music item, how do i activate it?

i can add only 1 music fille but it doesnt play ive done everything as you told me

yes the actual music item

I think he was asking about why it wasn't playing. The music item only allows you to upload one track to it. It will appear in your custom folder when you open it. It doesn't actually mean the music will play in your game. It's basically a storage thing.

ok then how do i upload it because it doesnt show a place to upload

Click on the music icon or the "edit" button and it will bring you to an upload page.