It would be cool if DropBox exposed some sort of file stream API that would let you manipulate file data as it's sent to the server. This could be used for encr

It would be cool if DropBox exposed some sort of file stream API that would let you manipulate file data as it's sent to the server. This could be used for encryption and possibly other activities as well (automatic downsampling of MP3s to save space on your DropBox, or just generic compression on the file stream; conversion of certain OS-specific file formats to something more genericly readable if you have a multi-OS environment using the same DropBox).