As a user, trying to submit a post. First, an image selected from Add Media [caption id="attachment_12472" align="alignnone" width="300"] FB Timeline[/caption] [audio mp3="https://gapoz.com/wp-content/uploads/2020/05/Wondering-Aloud_Troy-Crossley-Tull.mp3"][/audio] Next, an audio file. And as a final test, a video. [video width="320" height="180" mp4="https://gapoz.com/wp-content/uploads/2019/01/Nightmares.mp4"][/video]