iphone - 4 からの開始回数を保持

Question

次のコードで

 NSURL *file = [[NSURL alloc] initFileURLWithPath: [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:soundName]];
     //        NSData *data = [NSData dataWithContentsOfURL:file];
     myExampleSound1 =[[AVAudioPlayer alloc] initWithContentsOfURL:file error:nil];
     myExampleSound1.volume=0.9;
     [myExampleSound1 prepareToPlay];
     myExampleSound1.delegate = self;
     [myExampleSound1 play];
     [soundsArray addObject:myExampleSound1];

     NSLog(@"RETAIN COUNT BEFORE RELEASE file = %d, myExampleSound1=%d, soundsArray=%d", [file retainCount],[myExampleSound1 retainCount], [soundsArray retainCount]);
     [file release];
     NSLog(@"RETAIN COUNT AFTER RELEASE file = %d, myExampleSound1=%d, soundsArray=%d", [file retainCount],[myExampleSound1 retainCount], [soundsArray retainCount]);

ファイルの保持カウントは、リリース前は 4、リリース後は 3 です。前もって感謝します