I just received my 950 a few days ago, so I hadn't yet attempted to program my RC2000. After reading this post, I tried to program the volume up/down buttons, but no luck. This is VERY disappointing, but I guess it isn't really Outlaw's fault that the RC2000 has difficulty with some IR codes. I read somewhere it has problems with 'dual-pulse' codes, whatever those are. Supposedly this was fixed in the RC2000 MkII.