If you don't find what you need...
Look into Drupal (GPL), free CMS.
http://www.drupal.org/
Example CD Reviews site using Drupal
http://www.sudden-thoughts.com/
The Onion switched their entire site over to Drupal
http://www.theonion.com/
More example Drupal sites
http://ltc.smm.org/buzz/
http://www.ndp.ca/
http://www.projectopus.com/
http://anthropology.net/