Audio not in sync with picture

[My_Two_Cents]

Are you saying the audio sync is a problem when playing audio through your receiver only? You're not saying the audio is out of sync on the TV, right? If that's the case, then TV settings and HDMI cables from the BD player to the TV most likely have nothing to do with this.

Assuming it's the AVR audio that is out of sync, how is out of sync? Is the audio always before or after the video? You'll need to determine this in order to properly adjust it. As mentioned earlier, you should try to adjust the audio sync in your AVR, and if present in your BD player, you can play with settings there, also.