When you're listening to a song, podcast, or audiobook, tap on the screen to toggle, on and off, the progress slider at the top of the screen under the artist, track and album details.

Tapping and holding on the progress bar play head (the bullet moving along the progress bar) allows you to move to another section of the track. However, the combination of a relatively small screen, the size of most people's fingers, and sometimes lengthy media make this a coarse way of scrolling. What if you just want to back up a few seconds in an hour-long podcast?

The iPhone has a brilliant workaround. Tap the play head on the slider and then drag your finger down to scrub the playback at various speeds; the rate appears above the slider, such as "Quarter Speed Scrubbing." The farther down the screen you slide your finger, the more fine-grained control you have over moving the playhead.