It should be suspected that the Newsweek article oversimplifies things.

The release of 119 CDs obviously would include a large number of individual tracks. All that really was required is that someone recognize that "this track" sounds a lot like "that other performer," and be sufficiently curious to compare the two closely.

That the iTunes registry found a "correct" name for one of the tracks, and that the one who noticed was able to push for further investigation, may well have been pretty much coincidental.

The "right listener" might well have simply said "that sounds like my favorite performance by x" to trigger the eventual verification that the CDs were faked.

But it makes a better story to claim that "the new technology found it." The new technology may have raised the odds slightly, but it still was left to the person with the suspicion to seek a real investigation to prove what was going on.

John