You can find http://wiatr.info.pl conditions that involves immediate repayment for used music content also. That is called Sync Fees. Sync cost is a certificate granted with a holder of any copyrighted music to permit a licensee to synchronize music with aesthetic multimedia such as advertisings, films, Television shows, movie trailers, video gaming, etc. For instance, a video manufacturer is dire need of music content for a certain task which is in a restricted time of finding one.