They used to if you signed up for it. I think you had to pay like $20 each month for their Pay to Play (or sth like that) service. I did the math on the one song I have posted there and figured that it would be pretty difficult to get your money back unless you were out promoting your site somewhere where you would get a lot of plays.
I thought I read they discontinued that service though. (Could be wrong). I’m sure the FAQ on the site would tell you.