My first inclination is that it is Vista. There is a problem in the directshow filters in DX10. This could explain the generic, psp, custom rips, what audio settings did you use? Try mp3 and use graphedit (google search for Vista Graphedit) to see if the decoders and filters are connected correctly.
You could also try "media player classic" (google search) to see if it will play the movies.
I am perplexed as to why "full disk" or "main movie" would not work. There should be zero difference. Have you tried burning the rip to a DVD-R and playing from there?