Why do I get 'File not found' on my local files?

Soundly might not have full access to your disk, and be unable to access the files.

1. Go to System Preference->Security and Privacy.
2. Click on the Privacy tab at the top of the window.
3. Scroll down and click on Full Disk Access in the left-hand sidebar
4. Click on bottom left lock icon and enter password to make changes
5. Click on the + sign button
6. Browse to the Soundly app from Application -> Utilities and click Open
7. Soundly is now added to the list of apps with full disk access.