Only option is to upgrade the computer to handle iTunes 12.3.1
My computer is a MacPro1,1, upgradable to Mac OS X 10.7 only due to its 32-bit EFI being unsupported beyond it. iTunes 12.3.1 requires Mac OS X 10.8.5. I would have to run a second computer accessing the library on the Mac Pro's internal drive, either over afp or Firewire target disk mode, or modify Mac OS X to work on it with an upgrade to a supported graphics card and EFI64 emulation. Further, links to Apple's Radeon HD 5770 graphics card upgrade, recommended for this hack, are now broken.
I have applications I need to use that won't run on 10.7 or later.
I've looked at the current iTunes and don't like the UI changes. I want a Downloads window that stays open. I want to see my library, devices, and playlists in my sidebar all the time. Will my AppleScript that copies Release Date to Last Played Date on Podcasts so I can load them in chronological order still work?
And what really makes me angry is that
iTunes 11.4 was syncing over WiFi just fine with my iPad 3 (the "The new iPad") running iOS 9.2 up until yesterday when I had to quit and relaunch iTunes 11.4. Only then did it decide it wouldn't communicate.
The only warning Apple gave when trying to upgrade the iPad with iTunes 11.4 was an alert saying that iTunes 11.4 was the latest version, which was only conditionally accurate re:Mac OS X. I upgraded with a Mac Mini running the latest iTunes so I could save the license agreements that I would normally do in 11.4. iTunes 11.4 was working fine with iOS 9.2 until that relaunch.
iOS 9.2 will sync with iTunes 11.4; it just refuses to do so.