Unable To Use Soundfonts Correctly On Leopard, Why my used soundfont on Leopard plays the piano with sustain on? Options

[fablau]

Hello here,
I use Quicktime and some quicktime based applications to convert my MIDI audio files to AIFF or Mp3 audio files, and I use a free, high quality soundfont such as the following:

http://www.geocities.jp/shansoundfont/

everything worked great on Tiger, but now I am on Leopard and I am unable to correctly convert piano MIDI files because the sustain is always on. The problems seems to be present only when I use that soundfont. I'd like to be able to use the same soundfont on Leopard since that's of great high quality!

Any idea? Thank you in advance for any tip or thoughts.

Best,
Fabrizio