dff2dsf is an application used to convert .dff audio files, which cannot be tagged, to .dsf files which can be tagged. Note that there is no loss of quality in the conversion process: the conversion is a repackaging not a re-encoding.
What's new in dff2dsf
The Application is now notarized for distribution by Apple.
Support for Mac OS versions prior to 10.9 has been dropped.
Growl support has been dropped.
Support for Notification Center has been added. There are settings to optionally play a notification sound and to remove the notifications when the application exits.