I know nothing about xbox's and have no audio technical knowledge so be gentle :p
First of all are the headphones which plug into the front of the joypad for voice chat only or also for in game sound/effects etc?
Secondly I'm using my PC monitor instead of a TV and so I'm using a VGA cable, the audio connectors are white and red RCA type (I think). Pic below- http://assets.xbox.com/en-us/support/_images/VGA_establishing.jpg
I want to listen through headphones, how is this possible? Any help welcome.