I haaaave an account for Dorothy, and I'm going to share a few links I hope you might find helpful!

This is the artbook for Trails in the Sky FC and SC! It's huge and has lots of spoilers, so.

This is the soundtrack for Trails in the Sky First Chapter Evolution, I found it and thought it was fun.

And this is the soundtrack for Cold Steel.

And this is a small artbook I found for Cold Steel as well. It doesn't have a lot, though.

This seems to be a pastebin of Falcom soundtracks in FLAC but I haven't tried it yet.