DX

I think I'm having a slight hardware problem. Little bit of stereo audio is mixing with my recording. Even when I unplug the the MIC CABLE and the speaker cable and record on the mic port !! I use Asus Xonar DX

So I downloaded Dxtory full version. The quality was okay but I wanted better. I downloaded the Lagarith Losless codec and now when I record I only get the sound. It says it's an AVI file but it is just a music note where the video should be and I don't even hear any sound. I have tried...