imho, there is no reason to be off by 5ms/min. (this only applies to pure digital sources). if you're off by the amount you state, you should go back further and sync it there; therefor, no need to time stretch.
it's ALWAYS easier (and more practical) to cut a wav than to time stretch + or -.
marc
marc - not quite sure what you're saying. Perhaps I wasn't clear:
Without any correction, my 2 sources drift by 5 ms/min. That's just how it is - different A>Ds. Wherever I synch in post, one minute later, one of the sources will be out by 5 ms. My ears don't seem to like the sound when I'm off by more than about 5 ms. That means I would need to cut the wave file of one source every minute, which is a huge amount of work, requires smoothing between samples AND also means that I spend more time out of synch than in it.
On the other hand, if I do a proper, pitch preserving stretch, I can synch up at the start point and end up within a couple of milliseconds an hour later.
What makes the first approach easier and more practical?