This seems to have become a tradition or something so whatever I'll play along.
I just couldn't wait for the single to drop (June 03 2009) fortunately the net was kind enough to bless us with PV Rips.
FMA: Brotherhood OP1 - Again by Yui (PV Rip) <- DDL
For those of you looking for the ED I believe this is the PV for the ED song in mkv format from which one could rip the song if one were so inclined. If it is then I plan to rip it myself and I can post it if anyone is interested in bypassing the scary prospect of demuxing. The single for Uso should be out April 29th 2009 though so if you don't care that much you can just wait a few weeks and get a CD rip.
FMA: Brotherhood ED1 - Uso by SID