This page will introduce you to how to incorporate music in your videos by using music that is royalty-free. This is the third subpage and third step to using music in videos in a legal and ethical manner.
A note of caution: you may purchase or download royalty-free music, but it is an ambiguous term, especially since an implied license is involved. You may be agreeing to a license that allows for only a specific type of use. Be cautious of language that is extremely specific or restrictive about your use or that has an expiration date.
The resources provided (above) can be trusted, but each license will vary depending on the artist/creator, the track itself, the purpose of your use, and other factors.
If you find music elsewhere, look for red flags that the content is time-licensed or has restrictive terms. If you're unsure, contact the Center for Advancement of Digital Scholarship (CADS) or fill out a copyright consultation form.