Answer:
There are lots of places to find royalty free music. There are websites where you can preview tracks and purchase a license to use the music tracks in your project. There are also lots of websites and composers that offer free royalty free music.
Many people are confused by the term "royalty free" thinking that it means the music is "free" and doesn't cost anything to use. This would be like thinking that fat-free yogurt is free and sugar-free candy is free for you to take of the shelves at the grocery store.
But *free* royalty free music does exist and I am posting some links to the better sites I have found below.
I am also listing some professional royalty free music sites at the bottom of the list.