You play the file right after you "prepare to play". The buffer maybe it's not still ready at that moment. Make this test.
Declare AVAudioPlayer *player as global. Remove if (!player play)... from - (void)playPressed . Now create a new method that will be invoked on other button press.
Press your play button, wait a couple of seconds, and press the other button.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.