Ethernet isn't just for computers anymore. Many of your AV electronics, like Blu-ray Disc players, TiVo, and video game consoles feature high speed Ethernet ports to connect to the internet to download movies and music or stream video and music from your computer, or media server. But most times, there isn't an Ethernet connection where you need it. You could connect wirelessly, but WiFi can be unreliable, difficult to set up, and can't deliver t...