Thanks for your interest in Songsmith... as a first step, it would help if you could find out whether this issue is specific to Songsmith or is a problem with your microphone, e.g. by recording some sound in the Windows "Sound Recorder" program.
If this happens in all programs, which is likely, this is probably an issue with your physical microphone connecting only to one side of a stereo input on your sound device. I'd recommend first trying a different microphone; I'm 99% sure that will
solve the problem. A USB microphone will simplify your life and take a lot of possible issues out of the equation.
Hope that helps!
-Dan from the Songsmith Team