The wiki does a good job explaining how to add vanilla block sounds to custom blocks, but it is somewhat vague on how to add modded and/or custom sounds to blocks. I want to give a custom block the sounds Radrock from Alex's Caves uses, and while I managed to find the folder its sounds are located in alexscaves-2.0.2.jar\assets\alexscaves\sounds\block\radrock, the wiki doesn't seem to give much detail as to how I would reference them or where I would put the new SoundType.
I have attached the file I used to add custom blocks and the .jar file for Alex's Caves. I specifically want to add Radrock sounds to radrock_lead_ore