Phase issues are mentioned on page 178 of the Soundtrack Pro help manual. From a practical point of view, do I really need to check for these when I run my audio thru STP. They take a huge amount of time to process on my machine when I run my "Analysis". Will skipping really matter? Upgrading my video card won't have any effect on the performance of this analysis will it? Don't see how, but that was suggested by one tech (not a pro tech). G4 dual.