Oh man...I feel your pain. ._. I used to modify my bgms too and I never DID understand why CERTAIN songs wouldn't play...like everytime it happened, I went to find some other song to put there. ._.
BTW! Saiichi, your signature is really cute but might I ask why the girl is being manly and the guy (you) is being the girl? Shouldn't you be holding her? =P Lmao just a random thought. c=