But you can't really say it doesn't work "period" (which implies not at all). Airplay was nearly fully functional (I don't think mirroring worked as that was a newer feature added after Airplay was reverse engineered) until Apple did something to break it in iOS8. Given older devices still work, I can only assume whomever made this version (reverse engineered or whatever it is) missed something. The newest iTunes still works so it appears to be related only to iOS's implementation. Personally, I only have one iOS 9 device, so it's not a big deal here. All my own media is stored on my server anyway so why would I need to Airplay something to my own TV from my iPod Touch 5G when I can use Remote or Kodi's own interface? I still have a 1st gen ATV And a 2nd Gen ATV connected in the main living/family rooms as secondary devices so I'm not missing anything either way. I'm finding once I get the grunt work done (organizing things better for Kodi viewing than just a single iTunes library, much of which was already set up since a lot of things I have won't run in iTunes anyway), the interface is miles better looking for finding out information about movies, tv shows, etc. than iTunes for my own content (iTunes is centered around getting you to buy THEIR content and their content only. Fortunately, I found a way to decrypt my purchases from iTunes to use with other players like Kodi without losing resolution, not that I had many to begin with).
At least I discovered a way to add ProjectM (Milkdrop) visualizer effects to iTunes (https://forums.macrumors.com/threads/itunes-visualizers-projectm-awesome.1941865/) along the way. That does add a useful feature to Airplay Mirroring since Apple REFUSES to add any kind of Visualizer to Apple TV to show while music plays, I remember when people used to say it was because the first Apple TV didn't have enough power to show a visualizer (nonsense since XBMC had no trouble doing it), but it's more like they just don't give a crap. Beg all you want. They won't add a single feature request (e.g. iPods show lyrics if your song has them added in iTunes; the Remote App looked just like the iPod interface but it doesn't show lyrics and it would have been simple to add that, but they never did).
I also just discovered the newer iTunes and/or OS X now loses track of file manipulations in the background. This is a huge loss. You used to be able to move entire directories around, rename files, etc. and as long as iTunes was running, it would notice every change you made and keep track of where the files went. Now it's just as dumb as the Windows version and can't find a damn thing, making it much more of a PITA to clean up file naming or move home movies to more organized directories, etc.
The first generation Apple TV let you sub-folder movies. This was GREAT for a series of sequels like Star Wars. If you set the movies' "Show" setting to be "Star Wars Movies" then in Apple TV Movies you'd see "Star Wars Movies" with an >> next to it and when you clicked on it, you'd find all your Star Wars movies in it like a sub-folder. Similarly, TV Shows showed up as the Show Name and then went inward by season, etc. Now they all just show up in one gigantic flipping list, making a mockery of neatness and organization. With the newest iTunes, you can't even give movies a "Show" name anymore (they removed a lot of database labeling in the newer iTunes) so even if you still have an older Gen1 ATV, you can't organize sub-folders and the newer Apple TVs won't show them that way regardless. The newer AppleTVs won't output anything but 48kHz audio either. In a lot of ways, Apple TV has gone BACKWARDS in features and usefulness (other than handling higher resolutions). iOS is too limited compared to OSX for audio handling, etc. and Apple shows no signs of improving it (they don't care because they don't sell antyhing but Dolby Digital and compressed AAC anyway, so WTF do they care about bit-accurate WAV, AIFF, or Apple Lossless outputting in 44.1kHz or DTS Music Audio CDs, etc. that you might add to the library yourself? You are the enemy when you compress your own movies, after all.
I've found no simple way to audit an iTunes library either. It would be helpful to know if iTunes lost track of a file location without waiting to use one. In Kodi, you can just clean the library if you've moved something and then add the new location in. Having iTunes never lose track of moving files was far better, but they seem to screw that up somehow in iTunes 12.x.
Frankly, Apple could resell a lot of music if they'd offer AIFF/Lossless versions and/or 24/96 options. The Internet is only about 1000x faster than when iTunes started selling AAC compressed music. It's no big deal to sell an uncompressed CD or 24/96 album now. Hardly anyone is doing it. I guess the industry figures when kids listen to Beats headphones and those horrible earbuds, they won't know the difference or care. I just find it amusing that digital audio was in better shape (uncompressed) in 1984 than it is in 2015 in terms of the mainstream way to listen to music now. You have more convenience now, but quality has taken a back seat for a long time. Meanwhile, Blu-Ray has gone over-board and cinema sound now vastly surpasses music sound quality. It should probably be the other way around, but even since the days of radios compressing the crap out of everything no matter the format, people are used to poor audio.
