Where can I get royality free music to add to my demos? Or should I ever add background music to my demos?

Answer 1

You should add music to your demos if it is appropriate. Sometime it is and sometimes it's not. I use portions of faux commercials in my demos which often have a music bed. Some royalty free music can be found on the web. Most audio editing software (i.e. GarageBand) comes with music which a lot of people make use of. When it comes to auditions, though, I never use a music bed.  Others do, however.