A:AnswerHello NewRokuUser, There should be no movement on the legs. Please visit Roku Support for any product or support related questions at https://support.roku.com/ or call 408-556-9391
Roku
A:AnswerYes this tv accepts cable input via coaxial cable and would then act as a monitor for viewing programs. You would need to use your cable box remote to navigate.
A:AnswerNo, the remote provided does not have a headphone jack. However, you can purchase an upgraded remote from ROKU which will have a headphone jack.