You're talking about IDE and Primary channels which I know little about, but are you sure this is not just a codec issue?
In the guidance here http://club.cdfreaks.com/1712829-post5.html, at the bottom the advice is "DO NOT delete the IDE channel if your hard drive containing Windows is also on that channel!".
Did you try the PIO/DMA switch first?
Others here with that type of expertise will probably chip in.
when i try to play a movie, there is a notable delay on the sound or the video in some movies, what i have done so far is check the IDE channels and i saw that the secundary IDE channel was in PIO mode which is not good, so i deleted it, then i deleted the primary channel, that should resolve the problem but i still have the same problem, any help will be welcome
thanks in advance