6 of 8Image
The Windows or "Super" key brings up the main search interface which allows you to find applications and files on your computer.
Here's another search view showing installed applications.
Banshee is Ubuntu's equivalent to iTunes. You can connect and sync it with your iPod, iPhone and even Android devices. A built-in music store allows you to buy content from Amazon or Ubuntu One. You can also stream live music from Last.fm.