I split the headphone jack output into RCA. Then plug into my bose system sounds great. However, the Roku volume buttons are incapable of volume level adjustments. I end of using my enormous 1 1lb , 50 Button Bose remote, only utilizing the power button and volume rockers. Very inconvenient.
There’s a large range of options: “computer speakers” (some have remotes, many do not), Roku -> AVR -> TV and speakers etc. A lot really depends on your usage model. Most computer stuff expects to be within arm’s reach and so isn’t designed to be driven by a remote control. So, if you’re not within arm’s reach, you’ll want to pay attention to how things can be controlled.
