I don't know about anyone else but I often find it rather strange and annoying when I find a familiar game tune in an indie project file with a different name.  
I don't quite understand why people do it- are they trying to take credit for the song (which seems dishonest), remind themselves who it's associated with, prevent others from finding out which unfamiliar tunes in their game are original and which are reused - what? I cold understand a personal remix being renamed or a midi, but I don't quite see the point.

Maybe for sake of organization and naming them according how will their game will be or something.

That makes sense... but...  oh well.

I've usually always tried to compose the songs for my games, but if I do get outside songs, I'll either keep the original midi title (even if it's something weird like 1121johnremixFF2.mid) or I'll rename it to the situation I'm using for, purely so that I can either: A) Replace it with a new song later (by calling it the same name and overwriting it) or B) Just simply remember what I used the song for so I don't keep around songs that I'm not using. I'm verrrry forgetful.

letting the player know exactly what final fantasy midis they use is not really on a developer's list of priorities

(Don't take any offence to this...) But really, who ****in cares!? 

It's the same thing with OH GWDS --- ANIMES!?!?!?!?!?!? 

I guess I was worried about copyright, etc- though considering many of us are using pirate programs i guess that's moot.

Developers don't expect most players to go in and check what song was used in the game, but even if they did it doesn't really matter much. Sucks for the music producer and I'd be mad if I made the music, but really, what can you do lol

I rename the music so i know what song is for what, such as a song for a certain town or a characters theme, infact as i look though all the RM games i have they to seem to follow this trend, and besides the name of the song doesn't even matter, it doesn't show up in the game and most players don't look at the names of files so who cares.

because i dont give a fuck about copy right and licensing

I think Ocean already mentioned this but renaming the files not only makes it easier for you to keep track of them but more importantly makes them easy to replace. Imagine you are nearly done with a large game and decide that you want a different hero theme song. You would now have to go through every event that calls the specific file and replace it. While using the naming method you simply overwrite the existing file with a new one and the events stay in tact. There are other ways to avoid this kind of thing without tampering with the file names but this really is the easiest and most manageable way to do it.

I kinda thought this topic was dead already.  I just changed the title of an item I stuck in a game anyway, plus i noted it often lists the original source in the track list, so no biggie.