Ok.. i will start with the specs XP media center Logitech z-680s Audigy 2 ZS Platinum Right now I am connected with the standard Analog cables. The system sounds great the Logitech 680s really sound good. First question : I read a lot of you talking about a receiver “Denon” Does this hook up with a PC? Right now my speakers are connected to the back of my sub? If I were to get a receiver like the denon would they connect ? Also how much better can I make my system sound? Also.. with what I have what would sound better and by how much better Monster THX Analog cables or a Digital connection?