Doors Unlocked and Open Lyrics

Lyric discussion by mister care-too-much 

I think it's simply about finding peace in the midst of chaos. I really like StuffAndNonsense's interpretation, but I don't think Ben is talking about moving to the country, as "ocean of sound" suggests they're still in a place with a lot of external noise.

(Oh, and I was immediately reminded of Arcade Fire's "Ocean of Noise" when I read that lyric.)