Plugin not adding all my posts to the sitemap. Why?

Hello,

I am running the Sitempas and SEO plugin on my WPMU instance and it appears that it is only showing 31 of the 234 posts I have created in the site.

My website is: http://www.musicians-depot.com and is currently mapped to: http://musicians-depot.amazingnetoffers.com.

Is there any way to refresh or rebuild the sitemap so it will show all the posts? Thanks....