I wasn't able to use the bot version. The one I got from IRC

I've been able to use the version I got from torrenting, clannad full voice, as an iso. I burned it to a DVD, installed it though it seems just uncompressing the iso to a folder of your choice works too.

Then I used the files I mentionned earlier.

It was the only thing that worked for me. With the app locale change too.

I've spent some time with that VN, it's very slow, and I'm a tad bothered by the fact that everything is so motionless. But that's not a 3D game, and not an anime either. The name says it all, almost.
But at least we get very fine details I wasn't able to catch with the anime, or that wasn't there because of the format.