That's why you gotta do a bounce of the mix and out-of-phase mix...or, use some external editor that has a Delta function to compare the two for you. -george Dan & Estera Alvarez wrote: > But you also must really look at the waveform and make sure (by looking > at the numbers) that the whole thing is really a zero flatline. Very > small differences may not be easily discernible by simply playing back > and listening, no? > > -Dan