Filed under: FeaturesKnow Your Rights is Engadget's new technology law series, written by our own totally punk copyright attorney Nilay Patel. In it we'll try to answer some fundamental tech-law questions to help you stay out of trouble in this brave new world. Disclaimer: Although this post was written by an attorney, it is not meant as legal advice or analysis and should not be taken as such.We hate to do another Apple-related KYR so soon, but this week's announcement of Apple's pay-and-pay-again iPhone / iTunes ringtone maker (followed up by statements made by Apple VP Phil Schiller) has had a lot of people asking us the following question: