Apple has most definitely decided to change the look and feel of iTunes with the release of version 11. Cover Flow is now gone and even the iTunes icon has changed. Many people simply do not like the way Apple has chosen to change this app, especially if you have come to rely on certain features. Luckily, you can downgrade to an earlier version of iTunes if you follow these directions.
Step 1: If you want to backup various iTunes data such as Ratings, Plays, Playlists, *etc, you will want to create an xml file containing all of this data. Open iTunes, go to File and choose Library, Export Library. Then choose a place to save on your hard drive or external device.
Step 2: Copy or move your iTunes Music folder to a new location on your hard drive or external device.
Step 3: Download AppZapper (in my opinion, the best uninstaller for the Mac) and open it. Go to Preferences and uncheck "Keep Apple applications safe".
Step 4: Drag the iTunes icon over AppZapper. The app will list all files associated with iTunes. Once you press Zap! iTunes will be eradicated from your Mac.
Step 5: If you want to use the very last version of iTunes before iTunes 11. I recommend downloading iTunes 10.7 because it is compatible with all the latest versions of iOS devices including the iPhone 5 and iPad Mini.
Step 6: Download the app Pacifist and launch it. Drag the iTunes 10.7 .dmg file to the open app window. If you see the "Not Authorized" text in the upper right corner, click on this and enter your admin password. Then choose the .dmg file in the list. Then click Install. Pacifist will ask if you want to replace certain files and then you will want to check "Don't ask again for this installation". Click Replace.
Step 7: Move back your iTunes Music folder to its original location within the iTunes folder.
Step 8: Now it is time to bring back your Playlist and other data. Open iTunes and go to File, Library, Import Playlist. Choose the .xml file you created earlier. It might take quite some time to import all of this data.
Now, you should be back up and running with no problems using an earlier version of *iTunes. These directions should work for older versions of iTunes as well on OS X 10.5 and later.
* Note: you might very well lose artwork associated with music and video files when doing this downgrade. Also, iTunes Match might have authorization issues, in which case, you might need to call Apple to have your Mac reauthorized to make iTunes Match work properly again.
* Note: If upon opening iTunes 10.7 you receive the error message "The file "iTunes Library.itl" cannot be read because it was created by a newer version of itunes." Simply go to your iTunes folder and move the file iTunes Library.itl to the trash and relaunch the app.