Thanks for the quick response, Matt.
However, pre-bufferng is set to 6 seconds, unforunately. And the flashing of the controls indicate that there is something else going on. BTW, I've noticed two other things as well: the amount of delay between song seems to be proportional to the length of the song. And the "control-flashing" occurs when I'm using netremote also, ie. the pause/play flickers on my mobile as well.
Lazy