Basement: What are all those wires?

When people see this picture I hear "That's a lot of wires". They are:

• 5 x passive speakers (12 AWG pair)
• 1 x active subwoofer (co-ax)
• 2 x Ethernet (cat 5)
• 2 x phone (cat 5)
• 1 x control in (cat 5)
• 1 x control out (pair)
• 2 x spare to upstairs (cat 5)
• 2 x cable/sat in (co-ax)
• 1 x cable/sat out (co-ax)
• power on dedicated circuit

While the phone and control only need 4 wires, I used 8 wire cat 5 because, for some reason, at Rona it's cheaper. The spare cat 5 go to the top floor and could be used for audio, video, remote control, etc. The control out will be used for the room lights. Why get up?