Help please

The problem is that 6 of 8 tracks are empty, and the two lines that splitted the pc audio are in a single track, what can i do?

Hi, I'm very happy about having bought this software to record as it is very well done, but I got a question: why, when I import the video track in Sony Vegas (13) I get 8 audio tracks? Only 2 of them are filled with audio, one is the pc sound and the other is my mic. When I saw this I thought I cou...