Ah, just noticed something. I didn't look at the fist picture you posted, properly; only the second one. In the recording properties, I notice 'front mic' and 'microphone' are separate devices. Normally, at least in the case for the Xonar's I have owned, they just come under the one 'microphone' device. Obviously it's been changed it with the Xense, and maybe other newer Xonar cards.
You have 'front mic' set as default. If you are not using the front audio header. i.e. the audio sockets on the front of your case, then you want to select 'microphone' for the Xense. Only problem is, it displays that as unavailable. This was the problem the other guy had. It displayed 'microphone' as unavailable, even if the microphone was connected.