To turn a video into an audio file on your iPhone, you'll need to download a third-party app from the App Store. Most apps that allow you to convert video into audio are free, albeit supported by ads.

The right hardware and software — combined with time to learn — can improve the soundtrack in your videos, podcasts and other creative endeavors. By J. D. Biersdorfer J.D. Biersdorfer was a co-host of ...