How can I tell if I need permission?
Most music, software, movies, television shows and other media are covered by copyright. A good rule of thumb is to never download a media file without paying for it or getting permission unless it is offered as a free download on a reputable site (such as iTunes weekly free song files), it is clearly labeled as a free download by the copyright holder (such as free downloads on a band’s official site), or you know the work is in the public domain. For more information about permission, take a look at the Office of General Counsel copyright permission page.