This is a pretty interesting program. What you do is you put in the name of your favourite artist. then it will make a station dedicated to the sound and style of your artist. it then compiles a list of artists of similar styles and sounds and presents them to you. For instance putting in A Tribe Called Quest, the program has made some great song recommendations.
It really works.
If you don't like it then you just click on the album and you give it thumbs up or down. If you don't like it it will go to the next recommendation. You can create multiple stations dedicated to different music styles. Since using this my itunes list has been growing pretty quickly.
After 10 recommendations it will ask you to register. you don't need to verify anything. very easy and it will remember your list/account when you come back because of your username and password.
check it out. and these are full streamed songs, not just samples.