Scenario: You’ve obtained an audio or video file that’s either in a format unsupported by the device you intend to play it on—an iOS device, traditional iPod, or your Mac, for example—or in a form ...

To turn a video into an audio file on your iPhone, you'll need to download a third-party app from the App Store.

WAV audio files can be as large as 4GB, and even smaller files need a lot of space. While WAV format files are of excellent quality, not all users can afford to store them in their devices.