LAMP in its current incarnation requires someone to purchase a physical CD and place it in a CD jukebox, where it is then turned into an MP3. However, ripping MP3s of individual songs at will is still legally questionable, so LAMP takes advantage of the "ephemeral recording" provision of copyright law. Under this provision, consumers can create a "transmission program" so long as it is designed to be played back as a whole, in sequence. LAMP currently uses "transmission programs" that are approximately 30 minutes in length.