The new Raspberry Pi Model A+ combined with our RaspSqueeze-CEC or RaspCEC-Pi firmware is perfect for discretely tucking away where you don't have any CAT5. Simply add a usb wifi adapter and you have the smallest most energy efficient audio/CEC control solution there is. See below for more details;
http://forum.linuxmce.org/index.php?topic=8880.msg100541#msg100541 (http://forum.linuxmce.org/index.php?topic=8880.msg100541#msg100541)
All the best
Andy