"It offers thousands of songs that are Creative Commons licensed. The site is divided into three main categories. Those categories are Instrumental Music for Film & Video, Free Music for Commercial Projects, and Music for Video Games. Within each category you can search according to genre, instrument, and style. When you click the download icon on a file you will be prompted to copy the attribution information that is required to include in your project. "
"Freeplay Music hosts more than 15,000 music files that your students can download to use in their multimedia projects. The Freeplay Music education license allows students and teachers to use the music for free within the confines of the school. Publishing those projects on YouTube requires a slightly different though still free license. "
"This library contains recordings ranging from alternative news programming, to Grateful Dead concerts, to Old Time Radio shows, to book and poetry readings, to original music uploaded by our users. Many of these audios and MP3s are available for free download."
"Musopen’s collection of free recordings contains performances of the works of hundreds of composers. The collection can be searched by composer, by performer, by instrument, or by form. You can stream the music from Musopen for free. You can also download five recordings per day for free from Musopen."
"Sound Bible is a resource for finding and downloading free sound clips, sound effects, and sound bites. All of the sounds on Sound Bible are either public domain or labeled with a Creative Commons license. You can find sounds for use in podcasts, videos, slideshows, or other multimedia creations."