Step by step of how to convert DAT to Mac:
Download the DAT Converter for Mac and install it to your Mac an you can see the interface as the above!
Import DAT files to MAC DAT Converter and the files will be listed on the playlist! Click the play button to see the preview!

Under the "Profile" select any output formats as you want on your Mac.
Click the "Setting" button to set the parameters of the output files .

Click the "Convert" button to convert dat files on Mac!
iIf you have followed all step, you will find it is easy!