The Mamed site has been updated with this news:
I updated the readme section to include a complete dreamcast guide. It contains a lot of information found on the message board. Hopefully it will help everyone to run MAMED on their dreamcast. Please let me know if there are any mistakes or addtions I should make.Also the mamed unoffical compatability list now has some mirrors of the MAMED DJ images. So if you are having trouble downloading them from this site you might try from there instead.
Visit his site HERE