Well, this is why you shouldn't wait to grab music samples off official websites.
The former
http://arcrisefantasia.com/ is now defunct and I can't find an archived version. All assets are gone, including a piano solo version of the main theme. I had always intended to record it myself considering it never showed up on the official soundtrack or even in the game rip. This means, as far as I can tell, that this was a website-exclusive track.
Anyway... being the awesome people I know you all are, I'm sure
someone made a recording that they'd be happy to share. Right? ...maybe?