I just finished playing this game, and played most of it connected to my stereo system. The 3DS speakers couldn't do this soundtrack justice.
I'm really glad this is getting a CD release, but I've never bought a Japanese Club Nintendo soundtrack before so I don't know what I'm in for price-wise (or hunt-wise). I have no reasonable expectation this will wash ashore North America's Club Nintendo.
Edit: By the way, Joe--if you can help it at all, I definitely recommend bumping the game up in your queue. I put it off for a while myself, but once I got started, I couldn't put it down. I was enthralled!