This is what my Desktop currently looks like. I customised it using Candybar 3.3.3 (the Dock), Geektool (the Time and Date) and Synergy (the Music Display).

Here are the respective links:

http://panic.com/candybar/
http://projects.tynsoe.org/en/geektool/download.php (or from the Mac App Store)
http://wincent.com/a/products/synergy-classic/