It's a big problem across all makes. If your audio amplifier has a time adjust feature try that. Not all the HDTV's have that feature (check the manuals.)
-> What you learn later is why this is and why the new setups of HDMI to some Onkyo to your HDTV is what many find to be a good solution.
I am running the audio from my blue ray player and direct tv box directy to my audio amplifier. which is the waythe owners manual for my Samsung 6300 series instructs. I am using optical and coax for the audio...I hae tried all available hookups but the audio and picture are out of sync. The sound is actually ahead of the picture. From reading other comments ts seems to be a common problem any help.