I bought the Logitech z-5500 approx 3 years ago, it has hard wired speaker connection. Recently moved house and the room has been cabled for a surround sound (cables embedded in to walls). I need to connect these cables now to my z-5500 speakers. How can I do this? I assume I need to cut my cables on my speaker and connect to cable in wall? Similar issue with then connecting in to the amp (sub-woofer) Has anyone had any experience?