Issue description
The actual problem that i've seen is that even if i'm importing an .ogg file as a record the custom music disc still doesn't have any kind of music.
I'm created another workspace to test is maybe another features of my mod is not compatiable with this feature but no even in a blank workspace the music disc's won't work.
Try to short down the music disc, Cut out the parts you don’t need and leave the parts you want, you can use an online editor really tbh.