A person that purchases a CD can play it for their own personal use, but they can't use it for profit, put on shows, sell copies, whatever. The copyright owner has the right to all aspects of the commercial use of his work, and he has the right to refuse to allow it to be used where he doesn't want it to be used.Adapted works are another thing altogether. You might want to look into "fair use" and "parody" and how they relate to copyrights.