BGM issues, I cannot change the battle music. Options

[Ramathus]

I'll try to make this short and sweet...basically, I am doing my "programming" and then testing as I go along to make sure everything is going right. I've downloaded a few BGMs to add some variety to my music score, and when I walked south of the town I created, the game starts playing one of the BGMs that it's not supposed to. I go to the "system" specs, and check that the battle music is set to "battle 1" my preferred battle music (it's really not too bad imo, not for a basic tune)

I've checked all of my "troops" sections, to make sure that none of them had any event pages which indicated a "change in BGM"

I even went as far as to delete this particular BGM that it is playing, and when I go tot playtest, the game crashes before the a battle can start saying: "unable to find file XXX" (with XXX indicating the file name)

Any help would be appreciated!