Если вам нужно воспроизвести файлы AAC, вы можете использовать аудиоплеер AVAudioEngine:
import UIKit
import AVFoundation
class ViewController: UIViewController {
let audioEngine = AVAudioEngine()
let player = AVAudioPlayerNode()
override func viewDidLoad() {
super.viewDidLoad()
let url = Bundle.main.url(forResource: "audio_name", withExtension: "aac")!
do {
let audioFile = try AVAudioFile(forReading: url)
guard let buffer = AVAudioPCMBuffer(pcmFormat: audioFile.processingFormat, frameCapacity: .init(audioFile.length)) else { return }
try audioFile.read(into: buffer)
audioEngine.attach(player)
audioEngine.connect(player, to: audioEngine.mainMixerNode, format: buffer.format)
try audioEngine.start()
player.play()
player.scheduleBuffer(buffer, at: nil, options: .loops)
} catch {
print(error)
}
}
}