I actually found a little workaround for "deleting" the battle (armies engaging) music! Kind of simple coming from a simple mind. I deleted the Euro and Arab Battle wavs, copied the least intrusive battle sounds (an "Axe Swoosh", "Clink") to the music folder and renamed them Euro or Arab Battle 1 (2 & 3).wav. This way rather than hearing the music track when archers start firing, etc. I just hear a "swoosh" or "clink" played once or twice. That works for me!

As far as faction specific music I'm going to give it a try (a frightening prospect).

Thanks!