After becoming more and more frustrated with Spin Doctor X, I went back to version 5.04 (which came with Toast 9.)
In Spin Doctor X, my 19-track AIFF file took half an hour to edit, with many start-and-stop problems. (See my previous post about how much of a problem I had controlling the access point and the moving wave form.) When I finally had my tracks laid out, Spin Doctor X could successfully identify only 3 songs.
I opened the same virgin file using version 5.04. In less than ten minutes, I successfully laid out all 19 tracks with easy manipulation of the controls. I was able to save my file with a simple keystroke (not forcing me to "save as" every time.) And the old version of Spin Doctor successfully identified 17 out of 19 tracks, rather quickly.
The new version certainly "looks" more modern, but its terrible functionality and bugs make it useless for me. I will not use Spin Doctor X again. The old version is much superior.