If you ever run into a disk image in .daa format, and you need to access its contents on Mac OS X, DAA Converter for Mac OS X is what you need.
DAA Converter for Mac OS X is a free utility for converting DAA & GBI disk images to ISO format so they can be accessed on your Mac.
DAA Converter is a native GUI application which wraps the command-line tool, DAA2ISO / GBI 2 ISO, by Luigi Auriemma.
It runs on Mac OS X 10.3 Panther or later. I have tested it on Mac OS X Leopard which works just fine on 10.5, too.
Just drag the icon of any .daa or .gib disk image onto the application’s icon, and the conversion process will instantly take place – an .iso version of the disk image will be instantly created on the same directory as the source image file.