"close1-6.ogg" always play at full volume on my SFX pack

   I am making an SFX pack for myself, and for some reason the custom "close" and "item plop" sounds play at full volume, no matter what, until you are far enough away that they are out of loading distance and Minecraft doesn't play them. The "splash" noises also play at default volume, and none of the sounds seem to come from any direction. I have found no one else who has had this problem, and I am not sure if it is because of the files themselves or the file converters I used.