Used to be a P2P file sharing service where you can share whatever you want but they have since gone legit. Mist likely due to pressure from record labels and copyright issues. So now although you can still download music, video and other files, only non-copyrighted can be downloaded. If you would like access to copyrighted music and videos, you will need to pay for that privilege. They have over 15 million free songs and over 4 million licensed from record labels. Yes, not too shabby and since they are endorsed by the record labels, you do not need to worry about anything. Just buy the subscription or if you don't want to spend money, have a look at the free ones. iMesh claims to have a very powerful search engine which helps to filter off the songs you don't want. Their software allows you to sync with your iPod, listen to radio stations and even discover new artists. The software is available for free as well.