Yes I've done it for a map I have. You'd need to place the music in the folder C:\feralheart\media\music. Then you need to edit the music.cfg file. I would recoment that you put a copy of the original somewhere safe (like on the desktop or separate folder) just in case.
then you open the music.cfg (use notepad) and make a new music group and add the song under it.
Here's an example.
[Title]
media/music/title.mp3
[Plains]
media/music/plains1.mp3
media/music/plains2.mp3
media/music/plains3.mp3
[Caves]
media/music/caves1.mp3
media/music/caves2.mp3
[Sacred]
[custom]
media/music/Yoursong1.mp3
media/music/Yourmusic2.mp3
The green part is the original part of the file, the red is what you'll be adding. The last two songs would be the music you would want in the map. The word in the brackets ( [custom] ) is the new music group. Then in Mapmaker just type the name of the group in and that should do it.
Notes:
1. may be Case sensitive, so type it exactly
2. If sharing the map you would need to include the music file, along with the new Music.cfg file for the music to work.
3. The music.cfg file may be overwriten in future updates should more music be added.
Hope this helps.
