While Dungeons & Dragons: Chronicles of Mystara is digital release in the West, Capcom will release it in Japan as a retail title. Dungeons & Dragons: Mystara Hero Chronicle has other tweaks like an option to play four of the same hero and multiple difficulty settings.
A special bundle for Mystara Hero Chronicle only sold by Capcom directly contains the Chronicles of Mystara soundtrack. It looks like this is the only want to get the two disc soundtrack and Reborn tracks. Altogether there are over 80 songs and you can sample some of them below.