Where can I download FMA episodes free, so that I can put them on my Zune?

I want to put all 51 Fullmetal Alchemist episodes on my Zune, but can't find a place where I can download them from. (Preferably ones in MPEG, MP3 or WMV...NOT AVI). I've already searched other answers to similar questions, but the sites they gave didn't work. (and I've searched on Limewire already). Thanks!