Download Squidfont and the other soundfonts on Darkesword's page as a good starting point. Squidfont is an orchestral pack that has good voilin section as well as some brass and woodwinds. On the page there's also other sound fonts including a harp, a sax, a timpani, and more.
IIRC Mitsuda is mostly stuff like acoustic guitar, saxophone, harp, strings, but he also likes ethnic samples and orchestral samples too. You might want to download a brush jazz kit as well for light percussion. I don't think there's any "samples" per say that are exemplary of his style.