iPod 1.1: How to Scroll to Any Point in a Song: "1. From the Now Playing screen, press the Select button (in the center of iPod). A diamond symbol indicates the point in the song that is selected.
2. Use the scroll wheel to go to any point in the song. The diamond symbol moves as you scroll, and the elapsed time and time remaining indicators change.
3. The song continues playing from the point where you stopped scrolling. You may also press the Select button to continue playing."