title: Simultaneous play and record iOS 9
body: <p>I am trying to set up a simple player and recorder for iOS. I want to be able to play a file with noise sound through the headphone jack and listen to it simultaneously with the iPhone's built-in microphone. Am I able to do that with AVFoundation and Swift? I found some answers to simmilar questions mentioning RemoteIO framework but I can't seem to understand how this one works.</p>