Mp3skull.com, dilandau.com, mp3searchy.com, downloads.nl... I use these sites all the time to download music onto my mp4 player. You don't need to sign up for any of them at all or download a program like you have to do with bearshare.com. You just download the music directly from the site =D It's AWESOME and there's a 100% chance you won't get caught by the law or gov't because I've been using these sites for a very long time.
Oh and they 100% virus free. I've never had a virus problem :D
Some of the websites that you can get good music for free include artistdirect.com, bearshare.com, and airmp3.me. However, it may be hard to know a legit website that won't give your laptop a virus. To be on the safe side, you should download and install Frostwire to your laptop and use it to get free music with more security features.