Soundfonts in PT need a VST Host plugin.

Find, download and install a VSTi Soundfont Player plugin.

Such as "SF2".


http://www.best-free-vst.com/plugins/virtual-instruments/soundfont-sf2-player-01.php


There are others.


Is important to read and follow the directions regarding which one you choose, also might need to check the directions for installing in PT.


--Mac