Need Audio Help

I have the X-Tatic digital headset and im wonder can i have the sound come though the headset and my speakers. Reason is because its very annoying for me to pull my pc out from underneath my desk and plug the connections in at the back for the headset. when i plug this connection in it knocks the sound out from the speakers is it possible to have this connection in and have the speakers running as well.

I’m hoping i can leave that connection in the back and when i want to use my headset at night i can turn down the speakers and just use it without moving my machine in and out
Answer #1
Yep, Just use 3 of these audio splitters…Then plug the speakers into one of the splitter’s sockets and the headphones into the other.
http://www.dealextreme.com/p/3-5mm-audio-jack-splitter-5212
Answer #2
I have this one

For some reason the right speaker in my headphone wont work same goes for my right speaker