Welcome, @joshy507!
Thanks for inquiring about this here in the Roku Community!
We understand that you want to connect your Samsung soundbar and use it as a speaker while connecting your Roku Ultra LT to your TV. Don't worry we're here to assist.
Yes, this is possible if you configure the TV's audio output directly to the soundbar. You may need to check your TV manual for instructions on changing the audio output.
We hope this helps.
All the best,
Emman
Emmanuel-D.
Roku Community Moderator