See also:

• Society: Issues: Intellectual Property: Music Freedom  (81)

• Reading Between the Lines: Lessons from the SDMI Challenge - Dr. Felten's website about the status of the SDMI paper threatened with a lawsuit under the DMCA by the RIAA.
• The Register - RIAA Challenges SDMI Attack - Contains letters from RIAA to professor Edward Felton, and the paper in dispute: "Reading Between the Lines: Lessons from the SDMI Challenge."