Finally got this to work but turned out a bit different for me, my remote never unpaired after removing the packages. I had to go into system menu and unpair the remote, couldn't get it to let go of the original programming until I did that. I was really banging my head why the programming wouldn't change. Now it's all set to control power/input on TV, volume on Sonos Playbase. None of which would be an issue if Toshiba TV let internal speakers be disabled. Thanks for sharing this OP!