If you’re using Finsweet’s tools, you should be able to use CMS Sort with CMS Load, and they should work intelligently together to achieve what you want.
If they don’t, you can do this manually, but you need access to all of the content in order to sort across the entire list.
One way to do that is to Use multiple CL’s on the page, ranged 1-100, 101-200, etc.
You’d need a small script to “merge” them, and then a small script to sort them.