This is kind of strange, I think but: I was putting the iPad 2 away in it's bag, which also stores the wireless keyboard. The smart cover was down, so the iPad was locked. The wireless keyboard was still connected to the iPad via bluetooth. So, when I was putting the keyboard away, I pressed the "play" key (F8) and whatever was queued up in Music started playing. Is there any way to stop music from playing while the iPad is locked? Thanks.