Can't resize iTunes 11.0.2
Try changing the the window's minimum width value. To do so just:


Go to /Applications/iTunes.app/Conte­nts/Resources/YourLanguage.lpr­oj and open the AppConfig.plist file. ( I'd use a text editor to open it, as it's easier to modify the file this way.)
Look for &lt;key&gt;browser-window-minimum-width&lt;/key&gt; and change its integer value.
Save the file and Restart iTunes.