I'm not sure how to tell anyone exactly where to start when going this route. Frank and I have taken a few different and many similar paths to achieve some of the same goals.
On the whole, my experience with soundfonts is mainly relegated to using the GM wavetable from Sonic Implants along with many free ones that I picked up from Thomas Hammer's soundfont site, and what appears to be the now defunct Soundsite.
I used to use soundfonts quite a bit with my Soundblaster live's synth. I would often route some of the soundfont sounds to the input of the PA80 so that I could process them with it's effects and sometimes layer them with the internal voices. I used the PA80 as the controller, routed it's midi output to the SB live synth, and then fed the audio from the Sf back to the PA80.
Now I use softsynths, but I don't need to route them anywhere for effects processing.
I'll give a quick basic on how to use a softsynth for real time playing. You need a midi controller. You're arranger or any midi kb will work. One that has adjustable knobs and sliders is preferable ( adjsutable meaning you can set the knobs to the midi cc parameters of your choice so that you can control more things in real time without having to use the mouse. ) I use the Motif ES as my controller and route it's midi output to the midi input of my Vst host sequencer ( for me it's the SQ01 ). Both my SBlive card and Midiman card include midi interfaces, which are needed to connect midi output from the kb to the computer software.
I then simply open the VST instrument of my choice. In SQ01 soft sequencer, there is a virtual "rack" in which to open my Vst's. I then assign this Vst to a midi channel, open it up from the "rack" for editing, and voila. It works and plays like a hardware module, but instead it's in my computer, and merges with my soundcard to produce it's sounds. One requirement is a low latency soundcard, so that what you play is reproduced almost immediately ( "almost" being practically imperceptible to human ears ). The midiman audiophile soundcard I have works fine at about 8 ms of latency. Any good Asio or WDM based card should do the trick.
That's basically it, in it's simplest form.
The Korg PA1x costs over 3 grand. The Tyros over $2,500. With each you're limited to it's OS and architecture, styles ( ok you can add new ones ).
Here is what my setup might run ( these are approximates ). Remember though, a lot of this is overkill ( especially for the softsynths.. you can get great results with far less ).
My modest computer cost a little over $500 USD
One man band - 30 USD
Jammer Pro - 90 USd
Band in a Box - 90 Usd ( you don't need all of these.. may be overkil.. but I like it
Soundfonts - free ( you can add commercial ones, but there are plenty of good free ones out there as well )
Musiclabs Rythym and chords pro ( with all the extra guitar styles and slicy fill in drummer ( definite overkill.. but I LIKE it..lol ) - 300 Usd. Those who are more into modern synth oreinted music could substitute a modular "all in one" type soft workstation such as Reason or Arturia Storm, ( and actually save money with the latter ).
You also need a good host for the Musiclabs R&C and drum tools above. N track and SQ01 don't work here. You need a Vst host anyway so... Sonar or Cubase SX .. another 300 Usd .
If you don't want the musiclabs stuff, you can get N track studio which is a very good low end sequencing and mutitrack ausio program and is also a Vst host for about - 70 USd. You could also use a freeware Vst host such as Buzz, or Plogue Bidule ( ok Plogue is "development ware" but the current beta works pretty well ).
Yamaha SX-yg Softsynth - about 40 Usd
One high quality softsynth up to 200 - 300 Usd, but plenty of other outstanding softsynths for a lot less ( RGC Penatagon is excellent at about 100 Usd )
Crystal softsynth - one of the best in the land and it costs - FREE
Superwave P-8 analog modeling synth - also free and also excellent. Makes me want to but the even mopre powerful commercial version and I probably will.
Midiman audiphile or similar soundcard - 200 USd
So far we've spent up to about around 1700-1900 dollars if you add ALL of this stuff, or a lot less without the Musiclabs plug ins and mid high range sequencer or Reason type modular soft studio.
Of course, if you are reading this, you may already have a computer that will be suitable. Many of us also already have some hardware that can be utilized sound modules and / or midi contollers. Otherwise, a decent midi kb controller can be had for less than 200 USd
A lot of it may be overkill, but the system gives me a ton more options than any hardware arranger ever could, at less than the cost of a high end arranger. Of course I added a few more commercial soft synths because I'm an analog modeling junkie, but not all of them are analog based anyway. I also have several other programs, but some of them aren't necessary for this application, while others cost next to nothing or were outright freeware.
Frank touched on something else that is important. Setup time. This stuff may look complicated to someone who hasn't used it, but I can load up OMB or my SQ01 sequencer with my favorite softsynths faster than I can setup my Motif ES ( I have to load all the samples and user "rom" for my plug ins from a smart media card ).
http://www.kvr-vst.com is a good place to find musch of this stuff and can help point you to several links for better tutorials on how it all works.
For me it's good value for what I spent, but it does take some nitial work to integrate it all.
AJ
[This message has been edited by Bluezplayer (edited 01-23-2004).]