I would like the ability to be added to move forwards or backwards a folder at a time.
I wouldn’t guess so. It looks like the SlotMusic Player is being phased out (I may have ordered the last two from BestBuy’s site, and WalMart is also out of stock). There are other players that accept MicroSD, use aaa battery power, and include more features. They aren’t very expensive either; I’ve found about four so far, by searching for [microsd mp3 player aaa] on Google Shopping… good luck.