Wait - a patent was issued in August 2005 for the interface used by half a dozen different companies for the past 5+ years?
I personally have used the AudioRequest which is a hard drive based digital music server that is full sized - goes into your equipment rack. That interface, designed 5+ years ago, seems about as close to what everyone else has copied as anything that I have ever seen.
I can't believe that a patent could be issued on a globally used interface so many years after the original design.