A 'recent' recording of the entire score
I think it was actually done by Rosenman, but I just found it on iTunes. It was recorded in 1997 so that means it's actually in proper stereo unlike the original recording. This has made my day, as I love the score but was always bothered by its tinny '50s mono sound.
Just type in: "The Film Music of Leonard Rosenman: East of Eden" into iTunes.
CDEGFEDCC. (Shhh!)