There isn't one, as far as I know. You can go to the KN Shaiya site
and hover over the Data tab to click links to the right that will take you to artwork, wallpapers, and the music in Shaiya. It's more up to date than Aeria's.
You could try to check their 'forums' but be warned, it's a headache. They don't have forums like we do.
There's stuff to work with between the EN Fansite Kite and the stuff on the KN site. It's just a bit more work since if you wanted renders, you'd have to do it yourself.