You could do something like that in 1.0, but now all the files are zipped up in only a handful of dat files in 2.0 so I'm sure it would take a lot more then just a little amature fiddling to get different music. I really liked cids them in 1.0 and made it my limsa theme. Was really nice, and gave the area better atmosphere for me. I never seen any mods get bent out of shape over music swapping. I haven't came across any method for 2.0 sadly.

Anyhow I know it was brought up before about how all the battle music is the same thing. I honestly forgot what they said, but it was pretty much hey this is how we are going to do things. Idk if its a budget situation or what, but I really wish they would give separate tracks for different areas.