You always seem to find posts like these, explaining how to 'go back' to a previous version of software build. The problem is they don't explain the reasons why you shouldn't do this. In fact in most cases, as in this post, they simply say "if you don't like the new version". Well sorry, but most people don't like change and if you were to go through the life of technology not accepting change then you would still be riding around in a horse and carriage and using an outhouse for the toilet! The simple truth is when a brand new version, not just a new build number, as in the case of Itunes 12 from Itunes 11, there are enough changes, typically to the graphical user interface (GUI) to warrant the new built number. In this case, along with IOS 8 comes Itunes 12. Instead of posting how you can go back to an earlier version, the real instructions should be on how to use the new version and understand how you can adapt some of the older versions in to the newer version. Quite often it is nothing more than a GUI option within the settings. Don't fall for these posts that are only pushing you away from technology. When a new build comes out it may look and feel different but in all cases, there are security fixes and other issues that caused the previous versions to malfunction in some way or another. Embrace change!
How to Downgrade from iTunes 12 Back to iTunes 11