This video shows how to upload and embed audio files into pages and discussion posts using the new Canvas RCE that launched in mid 2020. You can use this method to upload most audio files. I like to record mine using the free progam "Audacity." There is a link at the bottom.
This series is aimed at helping folks figure out easy methods of adapting materials from face-to-face classes to online modalities during the Covid-19 pandemic.
Audacity Download: www.audacityteam.org/