you would need a decrypting program such as dvdfab decryptor, or for mac, mactheripper then you would have to shrink the file small enough to fit on a cd with only 700mb on it, you would do that with a program like nero. I dont know what the mac version of nero is. Also when you shrink a file that much, if it is even possible, you loose a lot of quality, I would recomend that you just get an external dvd burner for quality.