Can you connect AUX to HDMI?
Yes there are multiple Aux cables available as companion hdmi cables. Which one you need or want depends on the application. But anytime you have a need for signal that is not covered by the HDMI cable standard then you use what is known as a HDMI aux cable.
How do I connect my 3.5 mm jack to my TV?
Using 3.5mm analogue cables
They’re the same connector used on phones, tablets, laptops, etc. For this, you’ll need to use a 3.5mm audio jack on the TV end and a RCA jack on the speaker end. If your speakers also use 3.5mm for input connectivity (instead of RCA connectors), you can use a 3.5mm to 3.5mm cable.
Can I connect headphones to HDMI port?
chances are you wont. first, the hdmi on your tv is likely an input not an output. if its an input it would need to be arc capable if you want to use it at all. second, hdmi is digital and headphones are analog.