i am using the mcci utils mod, so it could just be an issue on that mod's part, but the songs from that mod show up on the list but dont actually play when clicked

Hello and thank you for the report!
I am currently in vacation, but I will take a look at it as soon as I can 😉

MCCI Utils mod is discontinued and doesn't seem to contain any music. Can you give me more details, or maybe a link to the mod if I didn't find the right one?

Even though I didn't find this with your mod, I actually found out that some music may not be registered properly, though they might be detected in the gui. I need to find out if I can detect music category from json. Otherwise, it will need that developers put their music file in a music folder, just like minecraft folder hierarchy

I saw your reply, I will reply as soon as I get the chance, I just don't want to leave you in the dark