Library content with the .ANME extension can be opened using the File, Open menu command, but the library also includes other files with .OBJ and .MTL extensions. These files are 3D files that can be opened using the File, Import menu command.
The library also includes some older files that have the .MOHO extension. These files can also be opened using the File, Open menu command.
You can also open the .ANME files by dragging them from the Folder view and dropping them on the Anime Studio main window.
Library content is also instantly accessible from the File, Import menu.
Several content library files include multiple layers of objects, and selecting any of these files from the File, Import menu or ...