Zen Xtra fast forward / rewind

OK I found out how to do this. I need to press and HOLD the fast forward or the rewind button so that it goes forward or back within a track. If I just press and LET IT GO then it would just skip to the next track in the playlist. Talk about user intefaces... BTW I also upgraded to the latest firmware for the Zen Xtra last week. And that was a painful process as well which involved fiddling around with the Zen Xtra's reset button with a pointy edge of a pin.