Redditors who have already installed the developer beta are
reporting that Apple has purportedly included full playback support for FLAC audio files in iOS 11. This means users now have the option to blast high-quality music files straight from their iPads and iPhones.
After all, one of the main reasons Apple is launching Files is to give
iPad owners more flexibility to use their tablets as improvised laptop stand-ins.
https://thenextweb.com/apple/2017/06/06/ios-11-flac-audio-iphone-ipad/#.tnw_KrhTC8Kz
올레!!