i have a simple questions: In the N3 can i use an audio source (Aux in using RGB connector) while playing a DVD? i dont want sound from the DVD, i only want to show it in the screen, and listen to something else at the same time...thanks in advance

You can only listen to whatever your selected source is.

pioneer did away with that feature on the n-3 , I had one and traded it back in so i could do that you are asking . I like to have a dvd playing and listen to the ipod or xm radio ........... It sucks but oh well

You can only do that with other monitors (headrest, overhead, etc.)