When trying to load in a custom sound asset it just doesn't happen. I am able to load it in through a resource pack perfectly fine.

My resources directory:

resources/assets/minecraft/sounds.json
{ "barry.wow": { "sounds": [ "barry/wow" ] } }

/resources/assets/minecraft/sounds/barry/wow.ogg

This works fine when loaded as a resource pack and executing /playsound barry.wow master @A, but not when attempting to load through ResourceLoader. Unrelated to ResourceLoader, AdditionalResources also has the same problem.