unless you own a modded saturn, you won't be able to do anything with those files (if you should find em)
its not like the machine plays copies right out of the box like its bigger brother
Actually there's a pretty simple swap trick. If I remember correctly, you put in a normal disc, wait after the security check has been performed and then put in the CD-R. No modding.
Sega CD, Saturn, Dreamcast.... Bad copy protection seems to be a family thing.
As for a translated Shining Force III, wasn't there a project for that too...
Ah, here, found it: http://forums.shiningforcecentral.com/index.php?showforum=34
I'm not sure how far it got though.