I'm looking for a way to hookup my chromecast audio to speakers and a subwoofer (for music).  I want one of these setups (1 cast + 4.1 speakers) in each room, but am unsure of how to go about setting up the speakers.  On my home theater, the "music" mode uses the 4 surround speakers, but no sub...

amplify audio from my pc with a tube amp to my headphones that also live monitor a shotgun mic.  Is there a simpler way of doing this, or just a better way?

What is a preAmp?  The only way to receive sound from my pc on a mixer like this http://www.music-group.com/Categories/Behringer/Mixers/Analog-Mixers/502/p/P0576 , is the 2 track input.  Then I can send the sound back to the PC via RCA from the 2 track out, but by then that will send the audio...

Ok thank you that was very helpful. Next, what exactly does an amp do, whether it be tube or solid state, does it just make it louder? Please avoid phrases like "cleaner sound" I want to know how it affects the signal from the mixer to the headphones

So sound from my pc via USB sounds the same as sound from my pc via rca or 3.5mm? Can you explain please, I'm trying to understand audio a lot more.

Also, which would be best for audio quality. Usb to mixer yo dark voice to headphones : rca to dark voice to mixer to headphones : rca to mixer to dark voice to headphones. Also are rca and the 3.5mm cables interchangeable via an adapter? I figured so because the 3.5mm cable seems to be the red...

Right now I am trying to decide the best way to set this idea up. Sound from my pc is fed into a mixer then the dark voice (or the dark voice then the mixer) which is fed to my headphones. Audio from my mic is fed to my mixer, then my pc. How do I get audio from my mic to my mixer to my pc...

I know that basic differences between analog and digital sound, but is a pc always digital sound, or does it go from digital to analog when it is output via 3.5mm cable. This leads into my next question, are 3.5mm/1/4inch connections analog or digital, or does this depend on the source they are...