I've also been playing with capturing the optical audio tracks on that 1 sec clip I posted the other day. I've managed to capture it by cropping each channel with avisynth and saving it as a 24bit bitmap and opening the waveform image in a program called imagetosound. I've managed to capture it at 32400 samples per second with 8bits per channel(limited by the resolution). I'm wondering how you guys are going about capturing it and what kind of quality it achieves? The 1 second I got sounds pretty awesome lol.
EDIT: Little off topic but I didn't know where else to put it.