Hi, found this plugin:
https://www.spigotmc.org/resources/jukelooper.72895/
It loops a CD in a jukebox over and over again. Atm it seems to work on 1.15 and is missing the pigstep cd and support for crimson, warped and polished Blackstone buttons. I don't know is someone (@pustinek ) is able to change that but it would be nice to have this plugin on survival. <3
PS: It can make a random jukebox, too. With multiple CD's playing.