1. need python installed in your system.
2. need pycurl module installed in your system.
3. Use it with your own risk!

example:

$ python getshared.py 
4shared download script
Usage: python getshared.py http://link4shared FileName

$ python getshared.py http://www.4shared.com/audio/Z6kV4TKC/Sherina_-_Cinta_Pertama__Terak.html pertamadanterakhir.mp3
pertamadanterakhir.mp3                                                                                                                                                                                  | 4.3 MB     00:32 

there is no word like 'copyright' in this application. Just use,and enjoy :)