The voice is saying, "I can't believe we live here".
This EVP recording was captured at the Villa Montezuma. The assistant curator and I were standing behind the front door waiting to open it for the Ghosts and Gravestones tour guests. The idea is to make it look like the door has opened by itself. The actor/tour guide was on the sidewalk in front of the house. The curator and I were the only ones in the house. Well, sort of. It is nice to know that spirits have a sense of humor. I would probably of said the same thing if I were watching two grown people hiding behind a door.