Before I got CT:DS for Christmas a couple years back, I'd been playing it off and on on emulators since I got my first Internet-computer combo back in '99. I'd also originally played it on the SNES back when I was 6 or 7, but that's too long ago to remember and I was too flighty to care about such things. So when I did get it for my DS, and started playing, the first real track I was hit with was Peaceful Days, the 1000 AD Guardia theme. The sound was simply something you can't reproduce on an emulator, and the music was absolutely beautiful that manly tears of awesome welled up in my eyes. I'm so, so glad they waited to port it to the DS rather than the GBA, for this reason.
Whoever's idea it was to put the music box in the extra's galleries gets my undying gratitude. Same with the FF6 port.