Performing Multiple Songs From The Same Live Set File?

[warpart]

Hi,
I've been using Ableton for a few months now and am amazed at what a versatile and powerful program it is. It seems there are many different ways to use it as there are users!
The way I've been using it is to have a single ALS file / set for each song. Using Session View, I typically have 7 or 8 channels containing things like backing tracks (drums and bass), instrument parts, vocals or vocal samples, sound effects, percussive loops etc, which I'll play as scenes or trigger individual clips.
I use an M-Audio Trigger Finger and Midi-map various clips to it's 16 pads. If I need more than 16 for one song I'll assign keys from the computer keyboard to trigger other clips. For triggering whole scenes I use the numeric keypad on my keyboard.
However, this means I can only ever have one song's worth of clips in a single ALS file, and I have 30-60 seconds of "dead air" between songs when I play live, while I stop one set and open another.
I figure if Ableton would allow me to export and import multiple MIDI / Keyboard Maps within a single file then I could actually have all the clips that make up all my songs loaded into a single Set and just use different Maps to move from the assignments of one song to the next.
Can anyone recommend a different approach I could take that might allow me to have potentially hundreds of clips within a single Set and be able to trigger them using my MIDI controller. I don't want to spend most my set looking at the screen, navigating up and down columns of clips triggering them with a mouse click.
Or alternately, is there a way to use multiple MIDI maps within a single Live Set?

[eduardoborsuci]

I simply love 'mixed records' and performances without the stupid silence between the songs. I currently use prerecorded mp3s as transitions between songs. Let me explain:

for each song, I have prerecorded a couple of beginning bars (or some other sounds to fit the end of one song and beginning of another). all I have to do is to trigger the mp3 via MIDI from iTunes (i use NI audio kontrol 1 for that) at the end of one song, load another song (takes 5-10secs for my macbook pro) and hit play when appropriate.

of course I tried importing the tracks into one set from another but for imported tracks, MIDI mappings are lost in this way...