I tried your solution as described above and It doesn’t seem to be working. I’m most likely doing something wrong, but I’m not sure what.
Here is the site in question. I’m trying to get a test file to play in the widget with Music as the title.
https://www.shiphighintransit.com/
Here is the code I’m using.
<?php if (function_exists("insert_audio_player")) {insert_audio_player("[audio:https://www.shiphighintransit.com/wordpress2/wp-content/audio/test01.mp3]"); } ?>
Thanks