secret vf2 music confirmed by anyone?

i've read various posts commenting on the Akira, Lau(???), and a few other original vf characters having their vf2 background themes played in the arcade version. I've seen and heard a few daioh.com videos of them for myself and believe(as well as heard other posters verify) that the vf2 music was actually being played during those matches. However, I still have not been able to locate anywhere if the same is applicable to the U.S. ps2 release. Do any code sites have the secret to unlock those musical scores in vf4? or has it pretty much been confirmed that this is an arcade-exclusive feature?

You gotta admit, some of the vf oldschool tunes were CLASSIC-sounding.