How can I change iPod dock icons on my iPhone?
You can change your dock shortcut icons at the bottom of the screen when the iPod app is running. The default icons from left to right are Playlists, Artists, Songs, Videos, and More.
To change this layout:
1. Open iPod and touch More.
2. Touch Edit at the top left of the screen.
3. Drag the icon you want into the task bar. Let go and it will replace whatever icon you drag it over.
4. Touch Done in the upper right hand corner.
Now you have custom icons in the iPod task bar.