Don't use copyrighted music
I was listening to a rock station several years ago and they were interviewing a well known and successful rock band that I cannot remember the name of. The DJ asked the band how they got their big break. One of the band members said that he was watching a movie once (and it was a very successful movie by the way,) and he heard one of their songs playing (and it later became a big hit) quite distinctly in one of the scenes. And he jumped up and said something like: "Hell! They don't have permission to use our song!" So they sued the filmmaker / distributors and got a lot of money and this is how they got their big break.
Anyone know who this rock group is and what the song was?
So when you become successful don't use copyrighted music unless you have permission or you could lose your shirt.