SpiralFrog allows users to download music and videos free of charge. The website launched today in U.S and Canada after months of beta testing. The website is absolutely legal, they get the revenue from advertising. To use the service you need to register with the website and should login at least once in a month.
SpiralFrog is currently offering 8 lakh audio tracks and 3,500 music video tracks.
Go visit the site and enjoy your free music and videos. 
Address: www.spiralfrog.com
Note: Available only to residents of United States of America and Canada.