The volume keys NEVER work initially with ANY audio code in the directv white remotes, reason is the volume keys won't work at all without a tv code programmed to the tv device. once there is a tv code its volume is now in the way, but that can be remedied:

So with tv code in, a code that powers the sony porogrammed in, probably 31758, to get the volume:

1. av1 or av2
2. press and hold MUTE & SELECT, wait for two blinks, release
3. enter 9 9 3
4. press VOL DOWN

if you want the sony volume in ALL devices do the following instead:

1. av1 or av2
2. press and hold MUTE & SELECT, wait for two blinks, release
3. enter 9 9 3
4. press SELECT