Good question liv3evil. IMO, it should not. At most I added ~2 seconds of fade-in and fade-out so it doesn't end and start too abruptly where appropriate. I believe in one of the tracks, I didn't fade in at all. Considering I want people to blind test ~2 minutes of each tune, I trust that whatever small change this added is miniscule in comparison. Misalignment in start/stop is likewise minimal such that even without exact matching down to the sample as Testikoff did for delta testing, you should be able to test the A/B variants in ABX Comparator and flip between them instantaneously without much of a noticeable discontinuity. In any event, the flexibity of one testing these files in the comfort of home is much better than any dealer showroom!