VO:MARZ and a number of other games use the ROFS archive format developed by CRI Middleware. A lot of these archives have unencrypted data but an encrypted TOC so they are kind of useless as they are. I had a bright idea and ran the game in emulation, made a save state and loaded the EE RAM in a hex editor to find the unencrypted TOC. I found it, patched it in to the ROFS file and ripped everything out of it. How's that for resourceful :D
They really went all out with the CRI stuff too; not surprising for a Sega game. It uses ADX for sound and music, NINJA format model and texture containers. NINJA models and PVR textures. This might be a lot of fun to finish ripping apart :D