You may have to edit the music.cgf file in your FeralHeart folder. That or rename the music files to what the previous music files were called. Also, make sure you put the music files in the music folder. (FeralHeart>>Media>>Music)
The game was hacked. You must sign into this page: http://feral-heart.com/login/index.php And then proceed to log into the game. Do NOT close out of that page. Leave it up as you play the game.