I found one post that had the same problem, but a solution for my setup wasn't included. Seems like there may be more people experiencing this, but maybe not.
So, I have a Premiere Pro edit (CC 2014) and I'm using dynamically linked AE comps to do some animation (also CC 2014 with latest updates). This is 4K RED footage. I keep having the problem where my audio (in AE) won't play in RAM preview. The waveform is there and I can scrub to get audio, but it's not there when I hit '0' Anybody else dealing with this? Seems like it may have something to do with precomps. I can get audio to play if I preview the comp with only .R3D files, but once I jump up a level in my hierarchy, audio's gone. And it's there when I render my comp in Premiere. But, I gotta be able to hear it in AE so I can time my animations.