Windows 7: Media Center audio sync problem

have a problem with Windows 7 MC - audio is out of synch with video.

This is my set up.
Pinnacle HDTV tuner card - has analog and digital tuners.
Analog tuner connected directly to an HD antenna.
Samsung set-top box connected to tuner via S-video.

Audio out on tuner card connected to Video 2 input on HT Receiver.
Audio out on set-top box connected to Video 1 input on HT Receiver
.
Analog tuner works fine with OTA channels. Set HT Receiver to Video 2 for sound - no synch problems.

Picture from set top box is OK, but sound lags 3 or 4 seconds behind.

Please let me know if this is enough info to help.
I have expended lots of time getting the video set up and really want this to work!



Thanks

Hi rcl57,

Please fill out your System Specs as completely as possible so we can better assist you.

Cheers,

Walker
Windows Outreach Team