Back to the original topic, I had a project today that caused me to use and learn much more about Song Master Pro, and I can say I am far more impressed with it than before.
Sound interesting. I usually have to learn entire repertoires quickly, and I've used Transcribe! as a transcribing aid for years. I also bought Decoda, from Zplane, but it has many limitations and it looks like won't be further developed.
The lack of a chord chart export feature in Songmaster pro is an important con for me, though. On the other hand, how does it manage tempo and time signature changes?