Memory size problem after deleting media.

I had 1678mb free on my fuze.i had a song which was 6mb and I didn’t like it so I deleted the song.and when I went to see the info on the fuze it said it has 1675mb free.but it has to be 1672mb when I removed my 6mb song.

why is this?

is it common to all players?

No. Unplug the fuze from the computer and let it refresh, then see what happens.