Openly-licensed content: check for license permissions
From Open Educational Resources (OER) libguide by Heather Blicher
Open-access audio: check for license restrictions
This audio is shared under a Creative Commons License Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) by Birocratic at https://birocratic.bandcamp.com/track/bob-ross-goes-to-hollywood-2