• Download the library
• Decompress it
• Select 'Airfoils - Libraries management' from Profili menu, then press the button 'Import a new library'. Now simply select the just decompressed file and the library will be loaded into Profili

Note:
The loading of the library with polars could be rather slow.
To load the libraries you must have installed Profili 2.10 or a newer version.

Library #1.  

Released on January 25, 2003, it includes 76 new airfoils. 
You can download it in one of these two versions:

• Library1.zip (about 500kB) include airfoils and preprocessed polars.
• Library1Light.zip (about 95kB ) include only the airfoils.