Above you can stream the full album of 1965-67 Cambridge St/ation, which is the first volume from Pink Floyd's box set The Early Years 1965-1972. The two-disc set focuses exclusively on the band's career from 1965 to 1967, when Syd Barrett was the band's leader and before David Gilmour joined the group.
The band also shared a two-disc set called Cre/ation which includes highlights from the entire 1965-1972 box set.
This and the rest of The Early Years 1965-1972 material is currently available on Amazon.