I have been checking out the free version of Spotify for the last few days and Im impressed. You can find just about anything your looking for. They have said their goal is to have every piece of music ever recorded on their site. On the other hand I won't be receiving much compensation for my music that's up there but plenty of exposure is a great thing.
Seems to me , music is becoming or already is free to many people. I hope that people will still support the musician by purchasing their music also. The sound is good on the free and $5 a month version but better on the $10 a month premium version. Im anxious to hear wether the premium version sounds that much better.