How To Disable X-fi Front Panel

I have SB X-Fi Platinum Fatal1ty Champion installed on my computer ( Win 7). I installed and updated all drivers and used it in Game mode first. Everything - sound, rare mic, front headphones , even remote controle worked just perfectly.After that I needed to use the front line-in so I pluged my cable in, changed the mode to Audio Creation and changed the recording device from microphone ( the rare one) to line-in ( front panel). It also worked just fine but since then I can't reverse it back. My rare mic won't work. I reinstalled the drivers, checked my mic - everything is just fine and working(checked on another computer) but the mic won't work. It can't recognize that the mic is plugged in.After long search in the net I found the interesting information that once you anable the front panel the back mic will get disabled automatically. Now I can't get it back to work. So my question is how can I disable the front line-in or panel