Smith Micro Software today announced the launch of StuffIt Deluxe 12, the latest update of its Mac compression and file management utility. Building on its heritage of developing state-of-the-art file compression technology, Smith Micro’s new version of StuffIt includes an advanced new compression engine that makes the StuffIt X file format more efficient than ever when compressing MP3 files, high quality images, and most popular office document file types. The free StuffIt Expander 12 is also available.