How do I burn/mount *.DAA files?
DAA which stands for Direct-Access-Archive is a disk image format used by PowerISO. PowerISO is only available for both Windows and Linux. You can find a brief description of this file here.
In order to burn/mount a DAA file on a Mac, you would need to download a DAA converter software. You can download DAA Converter v1.0 here. DAA converter is a free software that converts the DAA file into an ISO file which you can use to burn or mount on a Mac. DAA converter runs on OS X 10.3 or later and does not currently support password-protected DAA files.