I am attempting to create an ebook in Kindle Create that has embedded interactive audio, then convert it to epub in Calibre. I have added the KFX plugin, so that the .kpf file will be readable by Calibre. But when I try the conversion to either epub or mobi, I get an error message that begins:
ERROR: KFX conversion failed: <p><b>Cannot convert Presentation1b</b><br><br>Exception(u'Unknown com.amazon.yjconversion feature: yj_audio-2\nexternal_resource has extra data: zsSHNix_EhEDg_nv8mmGC904
Maybe there is some other plugin that will help with the audio? I've searched but haven't found anything obvious. Thanks in advance for any help you can offer.