Q: Other Space: I think I know why it's unecessarily growing, and I would like help please?

When I synced my iPod with iTunes, sometimes, and almost everytime I sync it, it always resyncs my music for some reason, and only some of my music, it doesn't get erases, I think it just puts the duplicates of the song in the Other space, becasue I noticed that my other space went from 967.2 to 988.7 when it finished syncing.

Please somebody help!! If your solution includes completely erasing and restarting everything from scratch, I don't want that, just any other way would be great!!

So please people, help!!!!!