Pic 2 is odd. I simply don't have a good explanation for it. The sequence shows that you didn't move anything in frame, and it doesn't jive with reflection thoughts because it looks to be free-standing, away from the wall. Nice pic!
Pic 3 is most likely moisture or dust on the lens itself. Since there's no flash, it's not floating in front of the camera. Because the camera was moved(ever so slightly), it's possible the light coming into the room did reflect off of the particles on the lens. But they do look neat!
The EVP is really tough. There's a lot of electronic noise. I hear where you say it sounds like a voice, although I can't make it out. It's very tough to pick out which leads me to think it may be audio pareidolia.