> "I have some SACDs but can't actually play them, even though my dac can do the audio. Is there some way to put the tracks on a computer?"
As per the other comments, it is technically possible, but not exactly straightforward: if you have access to a compatible BluRay player, you can create a special bootable USB stick, boot the player from that, connect to the player over the network, and use an SACD client to extract the ISO and/or DSF files containing the DSD data. You probably won't be able to play these directly on your media server, but you can use ffmpeg to convert to e.g. 24-bit/88.2kHz FLAC files. If you're interested, I wrote up the process I followed (with links to original sources) at https://www.michael-lewis.com/posts/extracting-multichannel-... .