Thanks for all of your replies. I just wish I had a better source of documentation. The English AmigaGuide manual has dead links for important functions (like the MIDI, and BPM raster). Apparently you can set things like Beats-Per-Minute raster, but I don't even really know what a "raster" is in Samplitude because the documentation is lacking. Oh well...
Actually, I'd just like to hear about anybody's experiences with Samplitude - what they do/did with it. Maybe I'll learn something new.
Generally, I use it to edit the stereo mixdowns of music I record. I trim the ends/beginnings of the songs, do fade-outs, and normalization with Samplitude. It's not fast like a modern PC, but I've got a few minutes to wait, and it does a fine job.