Maybe everybody knew this before, but I just found this in iTunes.
If you go to a track, right click, Get Info, Options, you can tell iTunes to remember the playback position for a track. As you can see from the image above, this track is nearly two hours long, so if you’re listening to something long (like The Twelves’ on Radio 1’s Essential Mix) it’s great that you don’t have to restart the track if you’re picking up from where you left off.