I want to put communication applications such as TeamSpeak 3 or skype to my headphones (front panel) and everything else to my speakers (back panel). I was able to do it in windows, however on linux I can't seem to get it to work I managed to get simultaneous output by disabling auto mute mode. I was on the pulse audio IRC and had someone tell me: "you will have to try the multi channel stuff to see if you get different output, the controls are kind of ambiguous" but I don't understand what he was talking about let alone how to do it.
The output of:
amixer contents
Can be found at: http://pastebin.com/YBnbcUqW