Q: no devices icon in itunes

http://support.apple.com/kb/TS1538

OH MY GOSH!! I just figured it out. Good thing, because I was not going to be able to function until I did.

The reason I didn't have a "manage devices" option is because I had not authorized any of my devices (Windows PC, iPod Touch, iPhone) to automatically download anything from my iCloud.

Once I went into my settings and did so, I suddenly had "manage devices," and all three of my devices showed up.

Here's the link to show you how to enable automatic downloads on a Mac, PC, or device (iPhone, iPod Touch).

http://support.apple.com/kb/HT4539

Hope that helped!