I have homesharing turned on on my laptop for my iPhone, and iPad. I live above my parents bar and they have free wifi so I use that. In iTunes on my laptop I click on the house with the music note and there's another library there titled "B's Library". I have no idea who that is. I clicked it and all their media shows up and I tried to play a song and it works. I thought it was all connected via apple id. Can this "B" person see my library and play my media?