You should use one AVAudioPlayer and let it play the next file in the sequence by implementing audioPlayerDidFinishPlaying:successfully: . You could then use an array with the filenames, keeping track of your current position with an integer that you increment on every audioPlayerDidFinishPlaying .
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.