There's undoubted been a general consensus here at Unplggd when it comes to the topic of wire control - it's nearly impossible to make them look good when mounted on a wall unless punch a hole in your walls (which isn't normally suggested if you're renting and want your deposit back). Thankfully, the Flatwire solution mentioned a few months back and is now finally available for your consuming pleasure.
"High Performance Speaker Wire and Subwoofer Cable Do-It-Myself™ In 4 Easy Steps for a simple and safe install. When purchased separately, the items in this kit cost $557.83. This FlatWire Ready® Install System offers a savings of $108.83!"
The kit is available for purchase at their online store for $399.