slendernight

So I need help on how to add a music selector in Ikemen or mugen like the ones from dbfz or blazblue games. I've tried to search it online on how to add it or code it only to find nothing. So I have to resort to this. Now the selector Im talking about is similar to the stage viewer except its for the music, so i want to know how to code or is there an application for it. Please let me know how to add it.