Check this gadget out....http://www.z500series.com/ It pushes just about any Video / Audio format you would want over using Wireless/10BaseT from you PC with Component or HDMI to your AV Amp. Only thing missing on my wish list (and holding me back) is 1080p support.
Nathan

HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs