What do you mean by "on a single button"? You'll need a volume up and a volume down button. The manual tells how to lock the volume control to the TV, DVD/LD, and CBL/SAT or an audio device to control volume in all device modes.

- Press and hole SETUP until you get two LED flashes.
- Press 993. The LED will flash twice.
- Press the device key you want to use to control the volume.

I use my amplifier to control volume in every device but TV watching over-the-air channels. I used the 993 sequence above to set my amp to control volume on every device. I then reprogrammed my SONY TV volume keys back to their original control using the 994 with advance codes sequence.

As for the 7 key. The only solution I can recommend is to remap an unused key to be the 7 fnuction. Then just remember to hit it instead of trying to hit the 7. Better yet, just avoid watching any channel with a 7 in it! ;-)

Dave