If the suggestion really is that the
sound of a file can vary, somehow, dependent upon its relative position within some kind of indeterminate packet structure then, arguably, you have a phenomenon that is
not testable by conventional means – particularly ABX which relies on having reference audio and the audio under test
lined-up accurately to enable the tester to switch between the reference and the audio under test.
We have an alleged phenomenon which, by definition, is not testable if its position has to be manipulated for purposes of the test.
Now call me a cynic but how wonderful it must seem to the audio fairy faction that someone has finally discovered a phenomenon which, by definition, cannot be ABX tested