After a decade of fighting the music industry appears to have given in and in a few hours (midnight EST) you will be able download Qtrax that will give unlimited, no fee, no membership access to a 25 million back catalogue of tracks.
The files will have DRM on them, and it remains to be seen if you can play them on an MP3 player. Apple won't be best pleased about it when the OSX version comes out. Once you have so many people around the world stealing copyrighted material I guess they knew that they would have embrace it and find a way of making money from it (i.e. advertising).