Final answer:
The Digital Millennium Copyright Act (DMCA) makes it illegal to copy or download copyright-protected music and videos without permission. It also prohibits the sale or use of programs or devices used in illegal copying.
Step-by-step explanation:
According to the Digital Millennium Copyright Act (DMCA), it is illegal to copy or download copyright-protected music and videos from the Internet without appropriate authorization. The act also establishes that copies of commercial programs may not be legally resold or given away. It further makes it a crime to sell or to use programs or devices that are used to illegally copy software.