I don't know if you are having the same problem I had when I first got my 950, but just in case you are I'll offer my experience.

The first time I tried to set up punch-through, I read page 39 of the manual and misunderstood the first step -- I pressed "AUD" and "MUTE" together, then "VOLUME UP", then "AUD" -- which assigned volume punch-through to the AUD device (so it punched through to itself, which I suspect the remote just ignored entirely). I didn't catch my mistake until later. I needed to assign the punch-through for each separate device (DVD, TV, CD, ...) -- so for punch-through from the CD, I had to press "CD" and "MUTE" together, then "VOLUME UP", then "AUD" (so it would use the volume control for the AUD device).

------------------
gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review