I have played a lot with rTorrent and wTorrent (which I've already posted how to set up) and also ruTorrent and various Web UIs for rTorrent but I've came to the conclusion that the best way (for me at least) for remote Bittorrent download is Transmission Remote GUI - I've been using it for a few days now and love it. Please note that I've only tested it on a remote Debian server but I've adapted everything for Ubuntu so it should work for it too. In this article, I will cover installing and configuring transmission-daemon in a headless (but should work on a normal Debian / Ubuntu install too) Debian or Ubuntu machine.