From the sound of it, CD Spin Doctor created its own sort of TOC file for the albums in question. If that's the case, I think the results would be the best if you were able to use, as you've already suggested, an updated version of the Toast Titanium suite to open up the files with CD Spin Doctor and send the albums to Toast for burning to audio CDs. I would think that if CD Spin Doctor recognizes the separate tracks, then Toast will make use of the track breaks as well.
It may even be possible, if the above is true, to send the files to Toast and export them individually from the list of tracks in the Toast window without having to burn any CDs.