It is a free program and can be used by any one to download the video/audio programs selected from youtube website.
there are two versions avialble and they are:
1.simple version (version 1.1)
This can be downloaded from the website www.ibsoftindia.com
Go to the website and select 'youtube downloader'.
The file is in rar archive and it can be unzipped using winrar or winzip and run the 'ytd_simple_setup.exe'.