There may come a time when you want to add music and sound effects to projects and websites. However, if you're going to include music in a project, you need to make sure you aren't violating copyright.
Music copyrights are especially tricky because many times there are actually two copyrights for a song:
one for the lyrics and music of a song
one for a particular version/recording of the song
As a general rule, you can use up to 10 percent, but no more than 30 seconds of a song without permission. This means you cannot use an entire song.
Legally purchased music is for personal and home use. Just because you bought a song does not mean you have permission to use it.
Using music for background is not considered educational use and therefore is not protected under the Fair Use provisions.
If you must use more than the allotted 10 percent of a copyrighted song, then you are legally obligated to get written permission.
Public domain music is music on which the copyright has expired or the author has released the song to the public. Public domain music is free to use and download.
You should include a citation/credits any time you use music in a project.
Need more information? Check out this article from School Video News.
The following websites allow you to download public domain music: