Curious, I've noticed for years now, haven't really said anything, but still get somewhat frustrated each time I see this happen. I click to listen to the playback, the green playback line moves along with the music, cool. But then, if I happen to move the page with the mouse scroll wheel, the music and green line get distorted. Although it seems like it is somewhat better now, the music will refresh or so when the music gets to the next system. But still, somewhat frustrating. Does anyone know why this happens? Thank you.