Apple iPad iOS 3.2 - Manual (Page 84)

You can display playback controls at any time when you’re listening to music and
using another application—or even when iPad is locked—by double-clicking the
Home button.
If you’re using an application, the playback controls appear in front of the application.
After using the controls, tap Close to remove them, or tap iPod to go your iPod library.
If iPad is locked, the controls appear onscreen, then disappear after you finish using
them.
Additional Song Controls
From the Now Playing screen, tap the album cover to see the controls.
The repeat and shuffle controls appear along with the scrubber bar. You can see
elapsed time, remaining time, and the song number.
Drag the playhead along the scrubber bar to skip to any point in the song. You can
adjust the scrub rate from high-speed to fine by sliding your finger down as you drag
the playhead along the scrubber bar. The scrub rate becomes slower the farther down
you slide your finger.
Repeat Playhead Scrubber bar
Shuffle
84 Chapter 12 iPod