The guitar is me but the rest of it was just a pre recorded backing track. I jam along with them all the time. Its not as much fun as a full band but with those tracks being digitally perfect, it improved my timing in ways I couldn't even comprehend before. Made me a better musician.
Its not so much wanting to dampen the sound from the rest of the house but I find the sound tends to bounce around a bit and would be nice to dampen some of it. Its a rectangular room which tends to be bad for sound reflection. Even just a couple of mats on the ceiling and walls would be good.
Good man, you don't forget about the drummer. Most set ups I seen, seems like the poor drummer gets left out lol.
RE: What would you do if you won the lottery?
Good answer lol