LTO-8 is 12TB native per cartridge. A used LTO can be as little as $300 USD with a 12TB cart $65ish. Ancient LTO-3 can be had for like...$5....and stores upto 800GB per tape.
how do you find so cheap LTO drives?
how do I carry RF remote signal from each room back to main unit...oh, I don't need to, could I make a web ui that controls the shuffler via a Pi to RS-232, that you access on your phone?...Shit...i could do this.
you could also do an RF IR remote bridge with two minimal Pis