In my limited experience I've found that the ease of mapping MIDI controller knobs to their software equivalents varies from application to application. In Ardour, for example, one middle clicks on a screen control, say, a mixer fader and a prompt appears telling you to move the desired hardware knob. This seems to work quite well. In something like ingen or AlsaModular Synth, you have to add a module that allows reception of MIDI controller input. In AMS, there's a quad MIDI-CV module that allows you to assign four MIDI CC controllers.

Hope this helps....
cheers,
ernie

On Thu, Sep 3, 2009 at 10:24 AM, Matt Henley <nwmatt@gmail.com> wrote:
I recently got access (on loan) to a Edirol PCR-300 USB midi keyboard.
 When I plug it into the computer it shows up under QJackCtl and is
quite usable as a midi keyboard for the Synths that I use (ZynAddSubFX
and AmSynth).  The question that I have is that the keyboard has a
full compliment of sliders, pads and rotary knobs which I don't know
how to use for anything.  Is there documentation on how to set these
up to control parameters on software such as
Ardour/Rosegarden/LMMS/Ingen?  If so where would i find it?  Do these
controls go to midi channels and can they be assigned to OSC controls?

Sorry for my ignorance, I just didn't know where to start.
Thanks
Matt
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--
++++++++++++++++
Ernie Dulanowsky
www.pulsewidth.ca
++++++++++++++++
oblique: Discover the recipes you are using and abandon them