YOU ARE THE MAN!!!!!
i spent an entire 8 hours trying to figure out what was creating that digital clipping sound. literally.
i tried to fix it on the software end, scripting end, hardware end.... i re-rendered things a million different ways a million different times... but I didn't think to stop normalizing all my files.
It definitely helps a bit, but...
some sounds seem to really bring the clipping out more than others. I can have some WAVS slammed to the max with bass and there is no problem. But as soon as I through a -10db reverberous string pluck or something on there it gets nasty with me. I just don't get it. Have you found the same thing?