My Ulead Movie Factory software intermittently gets confused when it's capturing the audio from my sound card. About 50 % of the time it decides to capture audio from the microphone input, as opposed to the external audio input (TV, e.g.)

This drives me crazy, because the only way I've figured out how to fix it is to uninstall Movie Factory and reinstall it. Not exactly an efficient solution.

Any of you techno-brainiacs out there know the right way to fix this problem?