Using the Java Sound Synthesizer, I pressed the Load Soundbank button on the Lane Properties panel, and assigned a soundfont. When I closed the selection dialog, the Lane Properties panel said "sound bank not saved" beneath the Load Soundbank. When I pressed the Load Soundbank button again, the selection dialog came up pointing to the dir from which I'd selected the soundfont (good), but without the previously-selected soundfont showing in the File Name textbox (not so good). Nevertheless, when I played the part, the Java Sound Synthesizer was using the soundfont.