Gavin Jacobs wrote:

The protocol is public. There is code (under GPL license) available at:
http://drm.sourceforge.net/

The only catch with the above is that they only provide the source. It
would take hours and hours to put together the development environment,
compile the libraries, and compile the executable. I know because I tried
- and failed. I had the necessary Visual Studio environment, but they also
assume that you own another third party tool called Trolltech QT 2.x which
is not free.

QT is free (as in GPL) for all OSs except windows. Very nice toolkit.

Web site's at: http://www.trolltech.com/

-Andrew

--
Andrew Stanley-Jones | "It's kind of fun to do the impossible."
EE, LongEz N87KJ | -- Walt Disney