My program, MMA, can do this quite easily. It's GPL so you can change it, etc. Generate a MIDI file and convert to whatever format suits. Quick and easy:  http://mellowood.ca/mma/index.html

On Wed, Nov 19, 2014 at 5:44 AM, Grekim Jennings <grekimj@acousticrefuge.com> wrote:
Am 18.11.2014 um 22:55 schrieb Brett McCoy:
> On Tue, Nov 18, 2014 at 4:22 PM, Ede Wolf <listac at nebelschwaden.de
> <mailto:listac at nebelschwaden.de>> wrote:
>
>     Thanks for all replies, I did not know about klick, I'll try to get
>     that running, sounds promising. And maybe investigate into clicktrack.
>
>     Hydrogen is, I would guess, liable to the instability of the
>     internal clock, and more a realtime recording than a (fast)
>     creation, but latter would not be a real hinderance.
>
>     SuperCollider seems a bit to advanced in usage for me, but I now
>     have something to start with
>
>
> I think any solution you come up with is going to be dependent on some
> kind of clock to generate the correct tempo and meter.
>
> --
> Brett W. McCoy -- http://www.brettwmccoy.com
> ------------------------------------------------------------------------
> "In the rhythm of music a secret is hidden; If I were to divulge it, it
> would overturn the world."
>      -- Jelaleddin Rumi


I have written a click track generator, "Metronome", that outputs a wave file.  You can adjust the sound of the click and program tempo changes through a text file.  
There are no options for swing type feels, but any meter is supported.  It is command line only and not open source yet.    
A word of caution, if importing into Ardour be sure to change the output name to something besides click.wav.
Info:  http://www.acousticrefuge.com/mixer4_all/metronome_info.txt
Download:  http://www.acousticrefuge.com/mixer4_all/mixer4_download.htm
Grekim

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