At least once a day, my gallery will generate duplicates, triplicates and sometimes quadruplicates of every photo, album cover, and any icon related folder that cannot be opened or deleted. I take 'bout, 4 pics a month and my camera folder be like 442...
Imma 'earbuds on the subway' dude, and the music player reads the same way....the worst.
So I clear media storage (and reboot) and its normal...for about an hour or two.
Holler if you have a better suggestion.
Its not that serious... but its on my nerves.