Hi Me Bill (SemiLive):
I suppose if one wants to "tweak" a song to the max, multiple recording via tracks is the way to do it. For my purposes (just a songwriter) I record to tape directly from the Yamaha PSR-2000. I re-cut as many "takes" as necessary to suit my ancient ears. When I have what I think is a reasonable cut for a "demo", I then record from the tape deck to the Boss BSR-864 digital recorder and then transport that result to the PC via USB. Once in the computer, I do whatever editing is needed, amplification, low-cut filter, clipping ends, etc. Then I send the result to my Dell DJ for final listening before I commit to a CD. An additional benefit of this process, I can "rehearse" the song several times until I hit it just the way I think it should sound.
Hope this helps. RICE (The Lone Arranger)