So, I've had a development. A bad one, actually. After trying the ROM, any custom Notifications I try to load play a generic tone from Samsung. Also, now my UI sounds the worked before won't play. So, now I'm at less than what I started with.
EDIT: Got it work. I had to set each audio files permission through Root Explorer. I found this thread that explains it.
|notification, root, sound, stock, user interface|