As creators ourselves we need to understand copyright, royalty, licences, and permissions. Especially as we publish our own work under a Creative Commons licence.
https://creativecommons.org/share-your-work/
Audio media to use/reuse/adapt
Searching for CC licensed audio on 
- Freesound is a community hub offering free audio, foley and original music, requiring only acknowledgement of the artist.
 - An example of CC-BY music via search on FMA (Free Music Archive)
 - An example of CC-BY music via search on YouTube (being careful to ensure that the licence is appropriate) e.g.
 - An example of CC-BY music via search on SoundCloud (being careful to ensure that the licence is appropriate) e.g.
 - Creative Commons Music by Jason Shaw on Audionautix.com
 - ICONS8 Fuge has both paid and free music, multiple licence types.
 - University of Wollongong has a Sound Library of royalty free audio and sound effects that you can use and also contribute to.
 
Broad visual media to use/reuse/adapt
Searching for CC licensed images on 
- flickr, image/video hosting service
 - unplash, a stock photography service
 - pixabay, for stock photography, stock footage, stock vector graphics, stock music