you can get it here http://www.lysator.liu.se/~zap/revelations/
I found that the disc art was a bit small. I noticed this before printing them (its designed for the hubless printable disc (large hole) ) and my little brother modified the image some (enlarged it) so that it fits more completely on the disc.
If anyone wants a copy of these versions of the disc art let me know and i can email them to you (along with the the layout settings i used while printing it on my parents Epson R300 printer with the epson disc print software)
-Darth Simon