Hey, basically everything is owned by someone. You will be EXTREMELY lucky if you can get film soundtracks or big artists to give you permission to use their music for FREE. They will charge you for the license.
"The process of licensing begins with extensive research into the ownership of the composition and/or the actual recording you are contemplating using. It is extremely important that you have a clear idea of the nature and scope of the terms that you need. Once it has been determined what type of license is required for your project, the task of clearing the music and negotiating the license begins. It is advisable to consult a music clearance and licensing expert as early as possible to help you determine your licensing needs and to commence the licensing process."
Mitchell