Or simply because it is cool to see your favorite album artwork as an icon on your iPhone screen.
This step requires an Internet connection and can't be avoided because there is no other way to create icons in the Home screen.
Tap the "Create Photo Icon" button and wait a few seconds. A web page with instructions will appear. Follow them in order to create the icon.
You will see how the new album icon appears in the Home screen.
You can have an iPhone screen full of album icons if you like it.
To move around or delete them: Tap and hold your finger on any icon until the icons on your home screen begin to wiggle, then click the "x" in the upper left corner of the icon you wish to remove. While icons are wiggling you can move them to a different location or screen.
The player shows:
The album will play using iPod so you can exit DisCover and keep listening. You can even put your iPhone to sleep and the music keeps playing.
If you start an album icon when there is music playing, it will stop first.