Have you ever lost any music on your Zune? No? Me either! But if you have managed to have something go wrong during a transfer, whether from PC to Zune or Zune to Zune, there is a possible savior out there. Generation Zune
has pointed out the Zune Data Unformat Utility
that can restore any files that have been lost on your Zune. Does it work? I have no idea. But if you're already desperate its worth a shot!
DISCLAIMER: I have no idea if this works and neither does Generation Zune. Use at your own risk! Who knows, maybe it has to sacrifice another song to the music gods before you get yours back.