Good morning
As you can see in the image, opening my epub file with the "R2 READER" application the video works correctly but the audio is not detected (I have tried various formats such as ogg, mp3, flac etc. but none of them work). Even with the test file you provided me the audio does not work. What can I do? The epub file, once ready, should be uploaded to the KOBO platform and made readable by both PC and mobile.
What do you recommend?
Thank you
Image:
https://drive.google.com/file/d/12F-...ew?usp=sharing