A:AnswerI would imagine your Bose system has a toslink optical audio input. It is one of three ways to get audio out of the television.
Pause is second from the left on the bottom row of your remote.
I included a link to the cable below.
I hope this helps
A:AnswerThe closer to the wall you are, the less the concern. When picking a mount, find a style that meets your needs, is rated for the size of your TV (43" for this TV), and will support the weight of your TV (22 pounds for this TV). The mount I went with allows me viewing flexibility and will support this TV (and larger) when fully extended.
A:AnswerThis TV runs on the Tizen Linux operating system. Since Tizen is neither Android nor iOS... nope. However, for true nerds, it may be possible through the SDK. I have not explored this possibility.