Sansa mp3 player will not unmount/eject/whatever

I have a Sansa Fuze 4GB media player, and every time I connect it to my computer, Ubuntu creates a new icon for it which I cannot get rid of. It won't unmount or eject, and the "move to trash" option is grayed-out. However, if I reconnect the player, the newest instance (if that's the word) of the drive is the only one that reads its contents; the other ones, when opened, display an empty mass storage drive.

Something about the player that may or may not be relevant: There is something wrong with the player so that it cannot be read in MTP mode. I have to force MSC mode.