There are 48 maps in the latest version of the compilation (the main post is an up-to-date listing). There is a self-installer available if you don't want to manually find the correct directories.
If you're running Entrenchment, Diplomacy, or Trinity, these maps will work just fine for you. If you're running the original game at a version number of less than 1.15, you'll need to patch your game to use these maps.
(EDIT)
I seem to be having issues with the link
https://forums.sinsofasolarempire.com/365777 thats the insite topic page
http://www.rtscommunity.com/mw/map.php?itemid=245&game=26 this is the download site
enjoy
