I don’t know of anybody bothering to try and replace the battery in one of these players, so if you want to attempt it, you’re on your own.
But the SlotRadio and SlotMusic cards can be played on any of the newer Sansa mp3 players; I don’t think they’ll work on another brand though. And no, there is no way to copy or move the songs to another plain memory card.
Sorry I don’t have better news for you.
