Be more specific about what kind of project you are trying to do. Then I can give some pointers. It doesn't make sense to me why you want to record the sound of the speakers, and not the signal mixed before it gets to the line out.
There is a mixer included in the Liveware software. Also a quick pointer,when you record your microphone, don't use the "mic" in. Use the "line" in. The mic in sounds bad and is distorted.
I can get more detailed after you give me some more info.