Slightly off-topic (but I know very savvy people are here, so I can't help but ask): Anyone knows where I could find a JPEG-2000 plug-in for GIMP that works on

Slightly off-topic (but I know very savvy people are here, so I can't help but ask): Anyone knows where I could find a JPEG-2000 plug-in for GIMP that works on this Mac version, along with instructions on how to install it?