Walt Sebastian writes: > Hi Guys, > Ok, What is a NLS key? I have an answer and a question. The NLS key is a digital signature that authorizes you to listen to the Talking Books. My question is, how is that handled? Is it a SIM card you put in to your player that contains the digital key to decrypt the files or is it a long string of digits you manually have to do something with before your player will work? Martin McCormick