A:AnswerI have done this a couple of ways. Throw distance changes the size, the farther away obviously the larger. In a situation that I only had a small distance available I used a mirrors at right angles to give me the distance I wanted when I did not have the ability to get further away in a straight line. The projector will reverse the image if need be to make the picture correct.
A:AnswerThe projector will not, but most likely whatever you have connected to it will. Ie. laptop, Roku, Apple TV.
I use a sound bar connected to my streaming device. Works great.