> Is there a way I could hook up both my PC and television to these speakers at the
> same time? I'm assuming I'd need some kind of adapter or splitter? If so, any
> inexpensive recommendations?
I'd recommend running HDMI audio+video from the PC into the TV, and then the TV's audio output will naturally send sound to the speakers when you're on the computer, just as it does when you're watching TV. Pretty much any PC video card with an HDMI output includes a built-in sound card for that kind of usage, you'll just need to change Windows to send the sound to there.
> In my Samsung TV options, under Audio Format, there is two options. PCM or DTS Neo
> 2:5. It's currently set at PCM. Should I change it to DTS Neo 2:5?
Don't change anything if you have working sound :-)
> I plugged the light green Audio In wire into the back of my television (Audio Out).
> On my subwoofer, there's a black and orange input underneath that. But my TV doesn't
> have those two inputs. So I can't plug them in. Are they needed?
You'd have to consult your manual for that, or call Logitech support.