Though I'm able to load the soundfont into the SF2 player just fine, the sounds don't play correctly. For most intstruments, whenever I hold down a key in the piano roll, rather than playing as one long continuous note, it instead plays as though a rapid series of notes are sounding in succession. ...
I think you'll need ipMIDI support on your computer for VMPK to work. Do you have that up and running?
(http://midi-clorianos.blogspot.com/2013 ... droid.html)