Fiber optic cable has come so far! I remember the original plastic Toslink cables: take the cable and wad it up in your hand, play a track and simply release the cable to hear the instruments shift mightily in the soundstage and the timbral balance shift.
Next: AT&T glass fiber
And here we are.
Transmitting data over a network is much more efficiently done via optical. There is a lot of VHQ glass optical bulk cable out there. There are a few stellar termination connectors. Shaxon connectors are very, very good. Use an optically clear epoxy. Cleave and clean. Clean again. Polish to a sub-micron finish. Clean and clean again. Cryogenically treat. Repolish. Clean, clean, clean...
Find a company that does that or contact NASA to see if they'll do some audio terminations for you. 🤣
Fork up $3000.00 per termination.
Music? Oh. It usually sounds better over very high quality copper. Why? I'd have to kill you.
Rock on...