Not that disagree with your conclusion, but I do have to take issue with the statement, "nobody can hear the difference between a 320kbps CBR audio file and the CD." All this experiment proves is that on average people can't tell the difference. To prove your original statement you'd need to show that given a large sample set of people there are none who can reliably select CD quality audio from 320kbps CBR audio given a selection of samples in different formats. A small number of people who have "dog ears" could easily be lost in the static. For what it's worth, I think you are likely correct.