Disqus comments allows disqus users to comment DJ-MediaTools items.
This plugin comes free with the subscription of the extension. You'll find it installed (you may need to enable it manually) after extension's installation, alternatively it's available in downloads section (available for active subscribers).
You can enable disqus comments from DJ-MediaTools option - "item views" tab.
Comments - Select comments type in Item view
Import Facebook SDK - Yes/No
Facebook Admins - enter facebook admin
DISQUS name - enter your disqus website's shortname