Hi! So recently, I've been trying to put custom sounds into Minecraft bedrock edition. Now, I have it for Android and Xbox One. The problem is, you can't use a resource pack to change any of the audio files in both platforms. BUT however you can on the new beta, 1.13.0.18. I don't know if this is a upcoming feature? Maybe you removed it before and are now just adding it back? This affects all versions of Bedrock of what I'm aware of. I tried to use the resource pack to replace the disc "11" in 1.13 beta and it works, but in 1.12 it does not.