Opening Mac audio files?

I have been given a remote hard drive with a bunch of files on it that were recorded in Digital Performer. The files are "SD2" files, which are a "sound designer" Mac audio file. I believe they are 40 minute long individual tracks from six ADAT tapes.

I need to open them up and mix and master the tunes. Anyone know of any decent file conversion software or method of converting the files?

SD2 files are just wav files with a wrapper
You could use a hex editor to grab what you need and save as  ....  .wav

Or try this app - I'm pretty sure I included everything

Thanks very much, I'll give it a try.