Okay. I'm running a Japanese 64 bit Windows 7 OS. I have used two separate releases (now downloading a third just in case) and I have the same issue everytime. I get an error message that says "File[bgm_XX.wav] couldn't be opened." This might not be the exact words as I'm translating it myself. XX is where the number for the wav file would be.
I have tried full install and I'm positive I've used full install. Voice acting and sound effects work fine, it's only the bgm that's not loading. I didn't have this issue on my Windows XP computer, if that helps.
To clarify, I believe both of these are rips of the J-List release of Enzai. One is in cue and bin format and the other is self-contained, neither work. I have also used the aarinfantasy upload which I believe is the one that worked on my old computer and had the same issue. I am giving Enzai admin rights and running in compatibility mode for Windows XP Service Pack 3.