I noticed that the Playstation Store copy of WipE'out" Classic is only 73 megabytes, give or take. However, my PSARDumper refuses to actually create a decrypted dump (like it should), and my PSX2PSP crashes when I try to extract an ISO from a PBP (the 'Convert to ISO' button doesn't work!), meaning I have no way of reverse-engineering the PS Store copy of WipEout and unlocking its secrets.

Obviously, the small file size has something to do with the music being re-encoded (allowing the game to be nearly 90% smaller), but that's as far as speculation is getting me. Any thoughts and/or help would be appreciated.