If you get a wrong answer, it simply explains how that answer can't be correct, and asks the question again. No penalty for getting it wrong.
As for the sound effects, I have a few that I ripped from the youtube video that I tried to clean up a bit.
Before thought route starts: http://k007.kiwi6.com/hotlink/80k9mrmoe ... oom_In.mp3
Display question: http://k007.kiwi6.com/hotlink/5umy1vgbd ... rough_.mp3
Get a correct answer: http://k007.kiwi6.com/hotlink/oswg7arkj ... rough_.mp3
Thought route finished: http://k007.kiwi6.com/hotlink/3y7h36zst ... om_Out.mp3
Not perfect, but it should suffice until we get a sound rip. Incidentally, the red line showing up in the scenes, that's because the scenes aren't completely opaque.
As for implementing everything shown in the thought route video, I don't think that will ever happen unless this is added as an editor feature. Even then I'm not sure. From the beginning, my intention was to make something that would provide a similar feel to what is in Dual Destinies. Not something that would be an exact replica in a 4:3 format.