Britney Spears’ newest single “Womanizer” will be delayed for ultimate mixing and mastering. Her rep said, “Yes the mix is being finalized and is expected to be done within a week.” An unfinished version of her new single has surfaced on the internet, what upset bosses for ruining the appropriate time of launching. A source said:,"Record company bosses have been frantically trying to pull the material from the internet. It's not good for Britney's comeback if people aren't getting to listen to the polished version."