Musopen - an online classical music repository

Here's a site that focuses on the baroque, classical, romantic and 20th century periods of classical music. Musopen takes music that is in the public domain, has it recorded by individuals and college/community orchestras throughout the United States, then allows it to be accessed for free. Musopen provides search, random play, streaming radio, mp3 downloads and browsing by performer, composer, instrument, form or period of its musical archives. There's even short introductions to music history, composers and their featured pieces of work. Musopen's lawyers assure that everything on the site is legal for download.