I just ran across your post about correcting lip-sync error and thought I would mention this review of three dedicated lip-sync correction units:

http://www.audaud.com/article.php?ArticleID=3011

Maybe the unit you have will work but all av receivers I have ever seen make it impossible to achieve perfect lip-sync by overlaying the screen with menus during the adjustment.

Since lip-sync error changes a little (sometimes a LOT) from program to program and DVD to DVD the audio delay must be adjusted at the beginning of every one if you want to eliminate it and its ill effects on viewer perception. Often it may take a few minutes for appropriate talking heads to come along and it often requires some tweaking as you go along for several more minutes. You need to be able to make those adjustments while watching without menus overlaying the screen.

All three of the dedicated digital audio delays in the review allow fine tuning the delay while watching without image disturbance and all three have over 600 ms delay in contrast to av receivers which sometimes offer only 80 ms which is definitely not enough.