Thanks for your answers guys,
I found it on github here: https://github.com/pd-l2ork/pd/blob/master/externals/footils/fluid/README
from readme: "fluid~ - soundfont external for Pd and Max/MSP orchestra in a box by fbar@footils.org "
The version in deken seems only be the mac version. Since I am on linux I will try purr data for now to test the fluid~ module.
Cheers, Rob