I’m not going to write much about this, because the following link is completely, 100 per cent awesome and speaks for itself:
http://music.square-enix.com/audio/
Square Enix music streaming. All day. Every day.
As Peter Griffin would say: Roadhouse.
Go enjoy! And if you haven’t had the chance yet; there’s Nier music there and Nier is the best game soundtrack ever.