Simple answer is that you cannot. Older shows in particular classic t.v., vhs, and older DVD discs are presented in full screen. That refers to an older almost square in shape television set, and this format of the show is filmed or edited to fit that standard. New t.v.sets are predominantly made in standard wide screen (like the set in question). New t.v. shows, widescreen labeled dvd's and blu ray offer shows filmed or edited to fill the screen on the widescreen t.v. set. Therefore, to get full screen shows to fill the edges of a widescreen set, the image is zoomed (cuts off top and bottom of images), or the image is stretched (ultimately distorting and making images appear wider than meant to be viewed).

Start with chromecast as the variables are nil, yes, you can hook-up chromecast to the usb port on the t.v.

For the wireless headphones, I can give 2 scenarios that work. This t.v. does have a headpone out (3.5mm jack), so if your headset connects this way, simply plug into port on the back. There is also a Toslink or fiber optic output. I doubt that your headphones function in this way. Finally, for a couple of dollars you can purchase an RCA to 3.5mm adapter where your white and red cable plug into the adapter and then is plugged into the 3.5mm jack on back of t.v.

I have attached the pieces from best buy to adapt to rca. The extension is added as I do not think the QVS part will fiy up in the space prvided.

This t.v. does have composite cable inputs, I have hooked up an old wii in this manner. 5 RCA style plugs, yellow, green, blue for video and white and red for the audio. The t.v. will not allow you to select composite until the device using the cables is plugged in and turned on. So input selection is limited to your device being powered on until you can select it.

HDMI cable is not included in the box. If your satellite decoder box has an hdmi output for video/sound, then that will provide you with the t.v.'s best picture and sound. Using composite cables on a t.v. of this size would also be fine as fidelity on this size led panel will be hard for the eye to notice degredation versus the hdmi cable. Composite cables are rca style connectors in yellow(video) and red(right) white(left) sound, but also has 2 other colored wires (green and blue). This t.v. will accept both styles, and I would not personally recommend just using the simple yellow, white, red rca cable. Using the simple cable i feel that the picture is grainy.