Cheers for the clarification.
As I have never used this option (I just don't like the pop-ups, so prefer a cleaner screen), in my MP skins, I doubt I am unable to assist further. Sorry.
All the...
As as addition:
I am certain you would have seen the best approach to setting up the music section tutorial. Just in case you have missed it, check here
I am uncertain to exactly what you are after?
Are you just wanting to:
add Music to your homescreen? Or,
setup Music, within the streamedMP skin?
Does the Music tab work, inside other skins...