"Creative Commons is a global nonprofit organization that enables sharing and reuse of creativity and knowledge through the provision of free legal tools. Our legal tools help those who want to encourage reuse of their works by offering them for use under generous, standardized terms."
"Freesound aims to create a huge collaborative database of audio snippets, samples, recordings, and all sorts of bleeps, ... released under Creative Commons licenses that allow their reuse."--from freesound
"SoundBible.com offers free sound clips for download in either wav or mp3 format. We have free and royalty free sound effects and clips for video editors, movie scores, game designers, and more." -- from SoundBible
Start with this basic set of instructions to set up your YouTube audio library using a Google account. Then, search for royalty-free music and sound effects to use in your project.
Creative Commons in a nutshell
With Creative Commons (CC) licenses, creators can choose how others may use their work. CC licensing falls between copyright and public domain. Below are the icons you will see associated with creative commons licensing across various content and how to interpret their meaning.
"This license allows re-users to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use."
This license allows others to copy, distribute, display, and perform your work — and any derivative works created — but for noncommercial purposes only. You may not charge money or make a profit.
No Derivative Works :
This license allows others to copy, distribute, display, and perform only exact copies of your work. No derivative works are allowed.
Share Alike : This license allows others to distribute derivative works only under a license identical to the license that governs your work. If you make something new with content under this license, you have to share your new content with the same permission for others to use.