Has anyone come across these gizmos:


So all I have to do is press a button and then the INPUT switches from my PC to the Xbox and VICE versa. There even seems to be a function for Picture In Picture. Pretty neat.
I have to find a cable for sound output, though... I use something similar, an HDMI switcher so I can have the PS3 and my pc hooked up to my monitor.  I then use optical (TOSLINK) to go from the PS3 to the back of my PCs optical in.

However this is no such luxury with the original Xbox.

For audio you will just need one of these
http://www.newegg.com/Product/Product.aspx?Item=N82E16812200418
and one of these
http://www.shopbot.ca/ps-ngear-3-5mm-stereo-audio-cable-gender-changer-ff-ng-3-5f3-5f-4928090.html
Then simply plug in the cable from your speakers, or feed the adapter into your line in socket on your pc, and have the sound feed out to your speakers.

Or if you can find a cable with 2 female RCA to a female 3.5mm socket you will not need the gender changer. and plug it directly into some computer speakers.So I got one of the above gadgets online for 75 RMB, which is 11 USD, and it works great-exactly as advertised.
Box shots (Click on image to expand):






It came with a manual, an AV cable, an S-Video cable, a VGA cable, and a 5VDC power adapter. Nothing fancy, all plug&play.
So here it is in action (I'm using WinRoute to share my computer's net connection with my IPTV, the computer is on its just my camera shutter speed causing the fan to look like its still and yeah look at that cable mess:)



My IPTV normally outputs at 1080p, and it automatically scales the picture to my monitor's default resolution:

I was surprised by the composite output on the Xbox turning out so well-the device nicely expanded the Xbox's native 800x600 resolution to fit my 1440x900 resolution:



The Picture-in-Picture function comes in handy for... erm... surreptitious gaming. Or because I can resize the PiP window I might pick up a SECOND hand 9800GT with an S-Video output and run 2 COMPUTERS on 1 monitor.

I do not adhere to safety standards properly-I have 3 computers, 2 monitors, 1 Xbox, 1 IPTV, 1 cellphone charger, 1 computer speaker, 1 printer, one household fan, and the device plugged into 1 single socket via 2 extension cords, 1 plugged into another.



Thanks Kurtiskain I'll keep an eye out for that RCA to 3.5mm converter-no audio right now.