tuxguitar-fluidsynth sound problems

Ubuntu Jaunty.

Tuxguitar using plugin tuxguitar-fluidsynth for sound playback with soundfonts produces distortion, particularly with screen activity.
As an alternative I ran fluidsynth using the following command to load the soundfont 32MbGMStereo.sf2 :-
"fluidsynth -l -o audio.period-size=1024 /home/dave/Guitar/Soundfonts/32MbGMStereo.sf2"
I then selected within Tuxguitar tools...settings...sound and chose the "synth input port"
Tuxguitar then played without the distortion using fluidsynth.

This problem also occurs in Intrepid but not Hardy.

Karmic release uses fluidsynth 1.09 wich defaults to jack output not alsa.
Therefore no playback with tuxguitar-fluidsynth at all without much fiddling.
However I suspect using:-
"fluidsynth -l -a alsa -o audio.period-size=1024 /home/dave/Guitar/Soundfonts/32MbGMStereo.sf2"
to force alsa playback would solve it.

A change is required in tuxguitar-fluidsynth to address the audio period issue and alsa playback issues.