Hey NumberChrunchers and TechnoGeeks, near as my ADD mind can figure, mp3 compresses audio and mp4, video by taking millions, perhaps even trillions of samples, then using 10% of them to build the output file by putting "close-matches" in the place of the 90% of samples not used. Digitally compressed audio sounds crunchy or gritty and motion in compressed video looks jerky, not fluid, to me. Does it really work that way?