Ability to Change Source for Sounds

I just realized this, but every custom sound you add, no matter what (even if you change the sound type when you import it) plays through SoundCategory.NEUTRAL. This might just be for the procedure block and, if it is, I'd like the addition of a dropdown menu that lets you change the source.

It's especially annoying for me because almost all sounds played in my mod are custom, so when you turn down the Passive/Friendly Mobs slider in the In-Game sounds menu, every single thing becomes muted.