How to get both audio devices working together?

[kingdede]

So i have a headset i use for gaming and it has a headphone and a mic jack, at the moment i have it set up so i can hear my xbox 360 and my computer sound at the same time with my xbox sound coming from the line in jack. When i try to use my mic however it uses my xbox sound instead i can get my mic to work if i unplug the line in jack coming from my xbox but then i cant hear my xbox. So i was wondering if there is anyway i could use both at the same time.
Any help would be apprieciated.

 

[Vaseer]

What card does your PC have? Try going into the drivers or in windows control panel, and set recording default to mic and not line in. Also, unmute your line-in and mic and test at the same time. See what happens. And again, what card does the PC have??