i know of a kinda stupid glitch that i found out on accident, on the cartridge (dunno if it works on the psx or rom versions) go to the rich guys house and go to the door and open it and stand in the doorway, now go to the menu and change the charicter on point to anything, then get out. you will be inside the door, and the record player will be glitched out.
note: this does absolutely nothing, it is just funny to do.