I was able to get sshfs working with the packages found here. They aren't in the repositories yet, probably because they aren't deemed as being stable enough, although I haven't had any problem yet. Some of those packages seem to be for developers using the SDK, also. I believe the only ones on that page that you will need to install are: fuse-utils, libfuse2, and sshfs-fuse.

You will probably have to install them with dpkg -i as root in the terminal. Also, as root, you have to load the fuse kernel module before sshfs will work. The command is "insmod /lib/modules/chinook-fuse.ko".

Then, as the normal "user", in the terminal, you mount some directory on another computer (that has sshd running) with:
sshfs username@hostname:/path/to/directory /path/to/tablet/directory

Hope that helps. Playing videos like this over the network works really well, even with larger videos. Although, with larger videos you might have to wait a few seconds when seeking forward or backwards.