All TV's of late are compatible with Roku. If you dont have it
within your TV you can get A Roku on the side all you need is a HDMI port.
If youre talking about getting the Roku Channel that would depend on
whether or not you have Roku internally or externally. Either way its accessible.
The fanciest Roku is the Ultra (like I have).
There are a million options for good sound.
---A problem clearly stated is a problem half solved---.