Voila! Pressing one of the two programmable shortcut buttons set to SiriusXM with the TV off turns on the Roku only and the last station selected on Sirius starts playng through the Streambar Pro and Satellite speakers without turning on the TV. Other music channels require you to select a station or playlist after the channel starts, but Sirius does not and starts playing immediately. So, yes, it IS possible to stream audio from the Soundbar Pro without having the TV on.
