I recently started listening to all 4 (not yet Smaug) movie soundtracks while playing...pretty amazing. Especially when the right song starts at the right time. I was farmign in the Misty Mountains, and then that song started playing from the Hobbit ST. Talk about chills! There are some maps that are actually better than anything from the soundtrack, Evendim being one of them. Anyways, I just wanted to share this so it might inspire somebody else to try the same.