Copyright Free Music
The Internet Archive hosts an extensive collection of music and other audio recordings that you can download for free.
The Free Music Archive provides free, high-quality, music in a wide range of genres. The content on Free Music Archive is used under various creative commons licenses. The New York State Music Fund provided initial funding for FMA. FMA seeks to maintain a high-quality resource through the use of selected curators who approve or deny all submissions to the collection. Anyone can download music from FMA for use in podcasts, videos, and other digital presentation formats. The music collections can be searched by genre or by curator.
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.
The next time you need common sounds like doorbells ringing, dogs barking, or car horns honking to use in a multimedia project you could try to record those sounds yourself or you could turn to SoundGator to find free recordings that you can download. SoundGator offers free sound recording downloads.