Hello. My father is blind and has a huge music collection (5TB lossless music).

Currently I manage his collection with iTunes in a windows computer. Everything is ALAC. He has an Apple TV 3 connected by wifi in the living room. He can control the ATV easily with voiceover: he can search using only the original remote, and the music is streamed to the ATV by Apple home sharing. The ATV is connected to a DAC by Toshlink and/or using a HDMI to coaxial audio extractor.

Everything works fine, and the system is quite robust/reliable. But the ATV can only deliver 24bit (or 16, i am not sure) /48kHz, no matter if the file is 44,1, 48, 96 or 192kHz. -> I know this because the DAC screen always says 48kHz. The newest ATV has the same limitation.

I am looking for a device with coaxial (ideally) or toshlink or USB (to plug a USB to coaxial) able to deliver 24/192 kHz native + being easily controlled by someone blind using just the remote. I know I'll need something like Plex or Kodi or something similar in the server. But the software must be able to manage HD audio through all the process (not like the home sharing, that reduces from HD to 48kHz at some point).

I don't ever discard cloning the current library in a external disk and plug it directly to the device if it's the only way. But playing HD audio natively and having an simple interface with screen reading is a must. I discard a laptop: probably the best option, but way too complicated for him.

Music streaming services are discarded. He prefer to invest in hardware and keep his music forever rather than a monthly fee.

Any advice for the hardware + software?

TY in advance.