Android ApplicationsAll the information you could ever want about Android Applications. Learn about apps and get help with them... all here! New apps can be found and announced in the Applications Announcements forum linked below.
If you just want to copy files back and forth there are many solutions.
I want to interact directly from Android apps with certain files on my NAS via SMB (in the same manner that I use my SD card) so have just installed CifsManager on my rooted phone. This is an option for you to consider in the future.