If you need to transfer a sample license to your record label or another party, for a song that's already released - please contact support@tracklib.com.

You can also send your song to another user/label/artist - if you are not the one who should be responsible for licensing the new song. You can do this by simply clicking the 3 dots next to any license and select "Send license". 

The receiver would need to have a Tracklib account but no subscription is needed. They would need to clear the sample and get their own license for their version, and if they are not on the Premium or Max plans - pay a license fee.