Hi Lisa,

As Lou suggested for cylinders in 'Phonograph Wax Cylinder Repair?' earlier this month, optical 
reformatting might be an option for retrieving the sound from your broken disc.

The Northeast Document Conservation Center is currently working on making this service available to 
the public. We anticipate we'll be ready to begin taking orders summer 2014. I can't guarantee we'll 
be able to work with your recording, and the service won't be cheap at first, but if your recording is 
very important, there may be ways to fund the transfer.

If you'd like more information about our (anticipated) service, you can read our announcement online 
at http://www.nedcc.org/audio-preservation or message me off list.

Mason Vander Lugt
Audio Preservation Specialist
Northeast Document Conservation Center
978-470-1010