Hey man, check out www.mp3unsigned.com - you get a few free songs then you can get a cheap VIP account if you have more. I find it easier to customise and more straight forward than soundclick. I also find the pages easier to navigate for listeners. At the end of the day it's good to use a few of them, I also have a page on soundclick and myspace.
PS Check out the mp3unsigned homepage... and look at the top left corner! Superhuman = featured artist of the week, yay! :)