Dmitriy, that is a good idea on the 501 by making it have a PIP without needing a second tuner by watching a recorded show while watching a live show at the same time, I will add it to my webpage. I wonder if this idea is possible or if it is something they need to do with hardware into the receiver. Perhaps they can add a module for extended features to the serial port just like they said that cd burners or other things could possibly be added.