Gs Editor?, GS Library/Editors for OS X Options

Are there any Roland GS editors/library software out there for OS X? Or for OS 9, for that matter. I've got a Roland RS-5, and there's a custom Windoze editor for the synth patches/tones, but I can't seem to find anything for the Mac. There seem to be some suggestions that a Sound Canvas editor would work, but again, I can't find a working download link for that, either . Thanks for the help.