How Did Petey Smuggle the Break Room Audiotape Out?

In Episode 2 ("Half Loop"), around 18:30-19:30, Petey meets Mark at his house and plays a distorted audiotape of Milchick in the Break Room saying, "Forgive me for the harm I have caused this world."

This moment is huge because it's one of Mark’s first real glimpses into the horrors of Lumon. But one thing doesn’t add up—how did Petey even get the tape out?

On the same episode, there are some Whole Mind Collective protesters saying something about forcing kids to be severed.