This is my firt time posting, anyway i think that using something so typical like linkin park for a FMA amv is not the best.
Depending on the type of amv you wanna do, I suggest you:
The killers - Mr. Brightside
The Cramberries - I'm Still remembering
The Cramberries - Dreams
Muse - Born
Aimeee mann - save me (I have in mind to do an amv with this song, because it fits almost perfectly with anything xD)