MP4 - MP5, Dont work.

[Shonumi]

@DefenderX: That's also what I said :p Anyway, the ISO files we're talking about are technically ROMs. NV explained this way back when in Delfino Plaza (PS3 emu thread of sth like that). They're disc images generated from CD-ROMs or DVD-ROMs. However, it's more conventional in game emulation to refer to disc images as ISOs to distinguish where it came from (optical disc vs cartridge).