For those looking for perfect alignement, you can use this one loop of 500hz sine wave :
http://we.tl/1GyED58hfq
http://www.ahjteam.com/upload/2008/500hz_sine_for_alignment.wav
Put this wav in front of the DI-signal and use it for alignment, works like a charm.
Using SPDIF, I get an audible shift so this is very useful to align perfectly.
(wav found on Ultimatemetal.com, provided by ahjteam)
Could you, or anyone, clarify this process? I think this method would work for me but am unsure of the best way to use the sample.