I think this might be something you could use. I saw it last year but forgot the name.
•SUPERFASTDOWNLOAD is a p2p file sharing application.
•A webmaster using the software selects a file to process.
•A tiny SFD file representing the original file is produced.
•The webmaster places the tiny SFD file on their website.
•A webmaster may store the original file on their website or host a backup of the original file on their home computer.
•A visitor to the website downloads the tiny SFD file in a fraction of a second activating the SUPERFASTDOWNLOAD software.
•The client connects with a central server to obtain a list of IP addresses of other people who have the same file.
•The file is then downloaded in parallel from multiple computers filling the available bandwidth to the maximum resulting in superfast speeds.
•The more popular a file the faster it will download.
SUPERFASTDOWNLOAD software uses a credit system to regulate
speed distribution.
• Webmasters may run their own SFD Central Server software.
http://www.superfastdownload.com/01_index.html