Not using the standard controls, but there are all manner of possibilities once you have the custom software running.
You could use FTP, but the transfer would be slow because the copy would go via your PC. There is another protocol I have yet to find out about (FXP) which might make the PC command Box A to copy directly to Box B, butall files would be encrypted and useless on a second box (StDef included) unless you take measures to decrypt them first.
If your aim is to have two Humax boxes for viewing in different rooms and sharing content, all you need to do is hook them up to the same network and they will be able to access recordings from each other, even HiDef, no worries about encryption. Unfortunately there is a 4GB file size limit bug at the moment (but the custom software has ways around that)!
More like 3+ hours of StDef. I mostly use StDef because I find it good enough for most purposes (it's only telly), it takes up less disk space, and it requires less effort to overcome limitations. Full discussion here: