I'm having a hard time figuring out a way to start an action when a sound has finished playing. I'm using the AVFoundation to play different sounds that ranges from a minute to about 3 minutes. I've managed to work things out on playing the sounds, but I want to have the text field to display a certain word, right when the sound is done playing. I'd appreciate if there are any tips or hints to help me out on this problem. Thanks.