Finding tracks that are really free uncopyrighted music that suits your video, film, game or presentation is very difficult but not impossible. The songs on my site here for instance are free, but I do still own the copyright and I ask that you credit me or donate.
With public domain music however, you don’t need to credit anyone or pay for it to be legal. In many cases the musicians and composers have passed away. In some rare cases the owner is still alive but offers the music under public domain.
Music expert Joel Selvin is curator of public domain music at his site Public Domain 4 U. You can simply right click on the links and download songs that he has found that have no copyrights.
Just remember, no matter where you find Public Domain music, that you should still do a bit of research on the piece before you use it. This is just to make sure that the audio really is Public Domain. Also, if the free uncopyrighted music is for commercial use you should run it by a lawyer. But if its just for personal YouTube videos or student film this may be a great alternative.
Video: How to Search for Free Uncopyrighted Music on Public Domain 4 U