answer: #Person1# tells John #Person1# suspects that a party guest had taken away #Person1#'s dad's MP3 player. #Person1# regrets not telling #Person1#'s parents about holding the party.
documents: #Person1#: John, my dad's new MP3 player seems to be missing. Did you move it?
  #Person2#: No, I didn't. Isn't it right next to the computer?
  #Person1#: No, and I don't see it anywhere. I have the feeling one of our party guests took it.
  #Person2#: Really? What are you going to do now?
  #Person1#: I'll just tell my parents what happened, I guess.
  #Person2#: Then they'll know you had people over without permission. Won't they be angry about that?
  #Person1#: Probably. I wish I'd done that from the start, instead of keeping my plans secret. They'd have said no to a party, and the MP3 player would still be here.