change in 3.0
When I was running the pre-3.0 software, it was enough to have files marked as type "audiobook" for the software to remember the place where I left off.
Now, with 3.0 installed, I also have to go to "get info" and check the option for "remember where I left off" or something to that effect. It was in the rightmost tab in the "get info" dialog. Also, I always set the option for "skip this in shuffle" also.