A:AnswerI added Disney + app after I installed the TV. It's no big deal to me because I use a Firestick on HDMI 3 so that I can move easily through Netflix, Prime, Disney, and others. It's faster, easier, and more sensible.
A:AnswerYou can by getting a Digital to Analog Audio Converter that allows the user to attach the fiber optic TOSLink cable from the TV to the converter, and from the converter to your stereo's RCA Aux/Tape input. These units are usually powered so you will need to have a power source, like a phone charger, attached to it. Cost for these devices can be as low as $25, up to whatever you wish to spend.
A:AnswerYes. Most commonly available wall mounts for sets of this size should allow you to attach this set to your wall, ceiling, whatever. Before you decide on a wall mount make sure it will support the weight and dimensions of your set.
A:AnswerThis set is provided with an output for a fiber optic cable, not a set of RCA jacks or 1/8" mini stereo jack. If you need to connect to a system that uses RCA jacks you will need to get a "Digital to Analog Audio Converter" that takes the fiber optic cable in and sends the signal out via standard RCA jacks.