ok so heres the deal i hav my xbox 360 hooked up to my pc monitor via an xbox 360 vga cord
heres a link if u dont understand: http://cgi.ebay.com.au/VGA-HD-TV-HDTV-AV-Optical-Cable-Cord-XBox-360-elite-/1704921387...item27b21f9510
but my audio is through an ipod docking station that allows for input.
So my question is if i want to capture my xbox 360 gameplay including audio, how do i do it.

thanks in advance