Not lnk here, but you can find demo versions of their older stuff on the tube. Money was acoustic, really cool. It had to go pretty deep as I've heard Dark Side of the Moon 100's of times. Mostly live.
Then there's, One of These Days which I heard clearly for the first time about a month ago.
You can find demos of all the Darkside. I had all the links, but I didn't save them.