A quick tunes plug.
I've pretty much glued my ears to Spain in My Heart: Songs of the Spanish Civil War.
Well obviously they're all songs from the Republican and International Brigades, since fascists can't write songs worth crap. :) The standout track is Lila Down's version of El Quinto Regimento, but that's just me. I think she's pretty incredible.
Now I just need to get cracking on those Miliciano's.