Moving Files using Site Content and Structure

UPDATE
Check out this codeplex tool before buy expensive third party tools
https://spdeploymentwizard.codeplex.com/
Use PowerShell

export-spweb http://site -itemurl "Library" -includeusersecurity -includeversions all –path d:\datafolder\library.cmp

Moving Files – Just use the OOTB tools like Content and Structure

http://office.microsoft.com/en-us/sharepoint-server-help/work-with-site-content-and-structure-HA010131723.aspx

from Microsoft you can ... You can move individual list items or entire subsites to another subsite within the site collection. A subsite can be moved to be directly under the top level in the site collection hierarchy or under another subsite in the site collection hierarchy. When you move a subsite, all of the content in the subsite is moved. However, you cannot move only a list (for example, only the Documents library) to another subsite. ...

also if you are a site owner in two sites in the same site collection you can move items

http://info.akgroup.com/blog-0/bid/70665/Moving-a-large-SharePoint-2007-list-or-library-with-Metadata-Part-1-of-3

Note:

You need to have the following features activated.

Site collection features - Office SharePoint Server Publishing Infrastructure

Site Feature (on the specific site) - Office SharePoint Server Publishing