Av1 and av2 are just aux settings on the Remote has
Nothing to do with optical
Or any other connection
As for remote programming slide
The slider on the directv remote
To av1 press and hold mute and select wait for flashes 991 flashes 3. Then press channel
Up repeatedly until the sound
Bar Powers off
If you get the unit to power
Off press and hold mute and select wait for flashes 993
Select this will lock the
Volume to the sound bar