The LE is a workstation, and as any other workstation it's simple to save all your presets for your live gig... OK, my opinion is that Korg has a bit complicated menus, but once you get the hang of it - it's easy... (i had a korg TR for a week or two, and those are almost the same keyboards).
So this is the idea... you have PROGs and COMBIs.
PROGs are your preset sounds that come with the keyboard (or the sounds you load via memory cards). You can edit them in any way etc etc...
COMBIs are (as the name says) combinations of up to 8 preset sounds (PROGs) and set-up for some song.
For example, the first 4 songs for my last gig were:
1. The Baywatch teme
2. You shook me all night long
3. Sweet home alabama
4. Sultans of swing
I have a layered piano and some strings on my first COMBI (A001),
then some hammonds and a piano ona my second combi (A002),
an old chorused piano and a hammond on A003
and a powerful hammond with strings on A004.
Al you have to do then i press the INC button (to push the combi +1),
or press your foot switch if you have one, or type A002-3-4 etc etc.
It's a lot of work to get all that programmed, but once you do it it takes you half a second to switch between songs...
Oh, yeah... once you setup your list, SAVE it so you can program another one in a sequence for your other gigs etc...
Hope I was helpful.