NetEase Cloud Music Read-Only Discs

A disc written with Read Only ticked can never be rewritten. Feeding it back into either machine refuses the write instead of replacing the song.

That makes read-only discs the right choice for anything you hand to someone else or leave in a public build - a jukebox wall in a spawn town, a shop selling albums, a soundtrack for an adventure map. Leave the tick off while you are still experimenting with a track, because a normal disc can be overwritten as many times as you like.