Thank you very much! I will take a look. If that doesn't work, I thought about connecting to the Slice's local network (via VPN) and then accessing the Slice via ssh/scp.
However, I've read in the Openelec documentation that the ssh password is hardcoded, which I'm not so keen on. They suggest switching to ssh keys and disabling password access. Can I do this on Slice, and does it work the same?
I was worried that, if I make a mistake with the keys once ssh password access is disabled, that I won't be able to get back in. In the worst case, can I use the Ctrl-Alt-F2 recovery console to re-enable password ssh access?