dmorris replied on 12-28-2009 2:37 PM
Many sound cards don't support a "microphone gain" feature. This slider being disabled doesn't mean that your microphone isn't working, it usually just means the microphone has its own way of controlling volume that isn't
exposed to applications like Songsmith.
Check out this post for more information:
http://community.research.microsoft.com/forums/p/2599/4128.aspx#4128
Hope that helps... happy Songsmith'ing!
-Dan from the Songsmith Team