Freegal is a free music download service. All you need is your library card number. Freegal offers access to about 7 million songs, including Sony Music's catalog of legendary artists. In total the collection is comprised of music from over 28,000 labels with music that originates in over 80 countries. There is no software to download, and there are no digital rights management (DRM) restrictions.
You can stream up to three hours of music per day in addition to the three song downloads per week.
Music videos too
In addition to music downloads, Freegal offers music videos to download. Each video download counts as two downloads against the weekly total of three.