Does anyone know how to make the portmento work?

As an FX applied to previously recorded audio? I've never heard of such a thing. I suppose it's possible, but I wouldn't expect the result to be very pretty over a very wide pitch range. Portamento is usually programmed into a synth patch. Melodyne might be able to do it, but I suspect it would take a lot of manual editing. Googling didn't get many hits, so I doubt it's built in. The only example I found was more like pitch bend of a single long note than portamento from one note to the next:
 
https://soundcloud.com/st...o-vocals-with-melodyne

You must be talking about a particular synth. Sonar as such doesn't really have or do anything with portamento. Nor does Fruityloops, by the way. Can you be more specific? What saw wave are you talking about?

Yes, portamento is a function of the virtual instrument, not the program. Note that some instruments do only monophonic portamento, in other words, it works only if the synth is producing one voice. Apparently polyphonic portamento is more difficult to implement.

It took me years of research to find a rambler that supports PORTAMENTO correctly with custom instrument files... the only winner is:
 
KONTAKT with a built in user script.  
 
You can get the glide sound between monophonic notes working as it does on a real synth (think MINI MOOG and Keith Emerson LUCKY MAN solo).
 
There are soft synths that support portamento but only with their internal generated sounds. I needed something that I can load my own samples into and apply portamento to. Hence, KONTAKT was the winner.
 
Jim

I read through some of the answers to my question and here is the saw tooth that I made in FL Studio. You will hear the portamento right away. it is just a blurb. I used an FL Studio synth to create this but I was not able to do it with other synths that were not native to FL Studio. Here is the link below. If this is able to be created like the below just using the midi portamento that would be great because that is what I am able to do in FL Studio with one of their synths. If not, cakewalk this is something that should be included in the next version. I can show how this was created in FL Studio if you need an example.
 
https://soundcloud.com/vampire-lestat/pornamento-in-fl-studio
 
By the way what ever happened to the reply button I would have replied to each answer. I guess this is how you have to do it now. 

YEs, like Sanderx. says, b rock has the answer, or at least something to try out. It's worth trying out even if you don't need the solution at the moment because once you see how easy it is to put a clip into rapture (or dimension pro for that matter)--and THEN you see/hear all the crazy OTHER things besides portamento that you can do with that clip once it's inside rapture--you'll get a whole bunch of ideas running around in your noggin that you may jump on now, or file away for future use--but you'll use them, fer sure! For one example, why stop at portamento once you're inside rapture? Add a modulation matrix setting to control, say, filter 1 resonance to change at the same time (along with the porto). Call it superporto or something catchy like that.
 
This cool suggestion from b rock is similar to the recent varispeed suggestion of anderton in another thread, where dim pro or rapture can be used to change a clip's sonic characteristics in musical (real) time, like the speeding up or slowing down of a mechanical audio tape player. There are many sonic possibilities that present themselves when you drop a clip, be it a sine wave or an entire track, into one of the sonar synths (dp or rapt). Why not drop a clip today and hear for yourself?

I listened to your clip.

I didn't.  Guilty (I was at "work").
 
And I think you're right, czyky.  I would approach this (recreating the audio example) with a Pitch EG or Pitch Step Generator solution.  It's so rapidly developing that it would take some real keyboard chops (or PRV note editing) to pull it off with classic mono/legato portamento.  it'd be easy to have the whole phrase develop in a Modulator; triggered by one note.  Load 017 - saw mk.wav in Multisamples, draw in a few EG nodes or StepGen steps in Shot mode, and you're there.
 
That's not to say that portamento doesn't have its place (like jkleban's Lucky Man / MiniMoog examples).  It's all "bending pitch" to some degree, but there are subtle differences among lag processor portamento, glides, glissandi, and extreme pitch bends.  Fortunately, it's all right there in synths like Rapture, and you can select the right tool for the right job.