Is it possible to play already existing system sounds without importing your own?
This code plays apple system sound "Tock.aiff"..I believe you can play different system sounds using this
NSString *path = [[NSBundle bundleWithIdentifier:@"com.apple.UIKit"] pathForResource:@"Tock" ofType:@"aiff"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:path], &soundID);
AudioServicesPlaySystemSound(soundID);
AudioServicesDisposeSystemSoundID(soundID);
See this thread
https://developer.apple.com/documentation/audiotoolbox/system_sound_services