Many receivers have an audio delay option for just this very reason. Does your receiver have the ability to delay the audio?
Are you using an optical cable or analog, and does it make a difference from one or another?
Just bought the latest and greatest Samsung LED and have been tinkering for a week or two. The LED picture is awesome and I am extremely pleased with the video. The audio , on the other hand is horrendous. So, move the Pioneer VSX-515 AV Reciver from downstairs to upstairs, hook it all up, sound is now great - except the lip sync is now horrendous. It's almost unbelievable - nearly 2 grand in a television that I cannot stand to watch.
Setup is Dish Network Reciever Audio out into Pioneer reciever audio in using optical cable. Dish Network Reciever video out into Samsung using HDMI 1.3 cable. (Pioneer does not have HDMI in)
Any suggestions here. Thoroughly disgusted at this point.