An exemplary digital rights management engine and related methods divides {HEAD ~ multimedia content} into service level layers, encrypts at least some of the layers, and offers {TAIL ~ access} to the encrypted layers by permission 
An exemplary digital rights management engine and related methods divides { HEAD ~ multimedia content } into service level layers , encrypts at least some of the layers , and offers { TAIL ~ access } to the encrypted layers by permission
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH