U2, R.E.M., and Bruce Springsteen are among the artists that won't sell their music to advertisers. Some musicians see licensing music in this way as "selling out," afraid their music will essentially become a jingle for the product. Bruce Springsteen turned down $12 million from Chrysler in 1986 to use his song "Born in the U.S.A."

Yet, some musicians feel they can make extra money and get publicity when selling their music. Moby, Britney Spears, and Madonna have sold their music for commercial play. Moby licensed all of his songs from his 1999 CD "Play" for use in movies and TV commercials. He said he wanted people to hear his music. Moby also earned more than $1 million from licensing his music.