How to Upload Media in Canvas Discussions
From MusicTechWiki
1. Click "Reply"
2. Locate and click on the icon called "Record/Upload Media"
3. If there is a permissions pop-up, click "Don't Allow"
4. Click on the tab called "Upload Media." Select the type of media you would like to upload.
5. Choose the file you wish to upload and click "Open"
6. Once your file has fully uploaded, click "Post Reply"