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[fireblaster_lyz]

I download it with firefox it won't work, right?

Obtain a extension from Firefox. There is an extension that allows you to download from external programs.

boy i have a ps2 disc and it still running slow

Pcsx 2 is STILL not ready. Beta staging is still underway.

I changed the default to DAO/SAO and started using it for burning, now the CDs work perfectly.

PSX CDs are written in RAW mode.