I've been listening to this OST sound track below, which frankly isn't all that extensive, only 2 songs and 2 instrumentals so far(?) as I can tell. I started watching the (apparently) new Chinese drama on youtube, Swords into Plowshares, after hearing the songs, just to try studying the subs. The sound track has an obvious patriotic theme, but also an emphasis on peace. (another political interpretation below)