Check out this page for more information on obtaining licenses : http://www.harryfox.com/license_music/what_type_license.html
To obtain a synchronization license to music in the Sony/ATV library go to: https://www.sonyatv.com/en/synch
To obtain rights for a track that is not available for licensing through eSynch, you need to contact the publisher and sound recording owner directly. To locate publisher information, you can use the Songfile Public Search or visit:
ASCAP
BMI
SESAC
U.S. Copyright Office