Yes, actually there is! ^.^
You know the 'music.cfg' file, ye? Open it, okay? See where it says "Plains", "Caves", and "Title"? You're going to copy one of those (Fancy stuff and all) and paste below all of it. Now, take the letters (Tite, Caves, or Plains, depends) and name it something you'd like it to be. Anything random, even.
Do that, 'kay? Good, you've got that done. Now, go to wherever your music is stored, preferably in the FH music file in 'media'. Copy/Paste the name of that to the 'music.cfg' thing, got it?
Now, see the other music files? They have 'media/music/*Name*', right? Copy/Paste that in front of your music file you have in the music thing, so it looks like the others.
Okay, so you've got that. Now, save and close that (Or just save), and open Feral Heart. Go to Map Maker, to your map. Go to the music thing, where you'd normally put music in. Add the title you have above your musics (For example: I have one labeled "My Music", so I'd type "My Music" into the box).
Now, go into Test Mode and see if it works!