I recently upgraded my Nano 2G to a 4G. With the 2G, the play progress bar had lines through it to show where the chapters are in podcasts. The 4G does not have this. Is there any way to turn this feature on? Also, with the 2G, in the upper left hand corner of the screen it would say "xx of xx" with regard to how many tracks are in the selected playlist. Again, this is missing on the 4G. Is there any way to turn this feature on?