In your Documents folder, search for a folder called “Fable”. Inside it, there should be another folder called “My Fable Sounds”. Place your sound files in that folder. After doing so, the sounds should show up as options of the “play custom sound” block.
If one of both of the folders are missing, just create them manually.
At this point, we support WAV and MP3 files.
On Chromebook, the Storage permission is required to discover and play custom sounds.
On iPad, the feature is not yet supported.