First, I extracted all the files with GC Image Tool and randomized them. Then I rebuild the game with the same tool, but when I try to load the Iso with Dolphin it says, that this Iso isn't supported. I tried the whole thing (extracting+rebuilding) with GCRebuilder, but this tool doesn't even let me rebuild. The randomizer change the file size a bit. Deleting files like "multi-defbgm32.dsp" doesn't work either. Does anyone know how to solve this problem ?