Is there a way to combine a Nutone Intercom/Sound sytem with Sonos?

I have a client with an existing Nutone IC/Sound system installed, but it is old and dated. I am trying to turn him onto a Sonos system and would like to take advantage of the already installed speakers throughout the house.

The current Nutone master stations are really not that impressive. I also don't need the intercom feature - just pipe in a couple of Sonos boxes.

One thought I had was to get a localized FM broadcaster and simply tune in the Nutone system to that station. Kind of ghetto though. The ultimate goal would be something that is basically an LCD touch panel to replace the Nutone master station - think of it as a wall mounted Sonos controller - that would be able to directly feed the already wired and installed speakers.

If you are familiar with these type systems and could point me to some alternatives or perhaps some more dedicated forums that would be great. Also feel free to click my profile and email me if you like.

Thanks!