[Recommended questions did not answer my question]
Here is the case: I have one laptop, one desktop and one external hard drive. I already synchronise my documents and images by means of Microsoft's Skydrive but my Music and Video's folders are too large to do this.
What I need is something that can sync folders on my laptop with files on my external device. Afterwards, when I connect the external device to my desktop, the desktop should synchronise with the external hard drive so that my music and video's are up-to-date on all devices. It would be nice to have an option to select which files to keep when two new sub-folders or files are the same.
Does anyone know a program, utility or Windows functionality (Mac not needed) that can do this? Both laptop and desktop run Windows 7 (laptop 32 bit, desktop 64 bit).
EDIT: Since both the laptop and the desktop are connected to the same LAN, it's also possible to let them sync via the local network. That would be even more perfect. I don't want it to sync over the Internet (would cost too much time and download/upload) but over LAN should not be a problem.