Your MBWE is adding up on your electric bill 24/7 so why not let it do your torrent downloading instead of your desktop machine.
With these instructions, it will be able to download all those err... linux distros for you and even download stuff automatically from RSS feeds.
In this guide, I will be using Transmission as a BitTorrent client, but you could probably do the same stuff with rTorrent or some other BitTorrent client out there. The main reason I chose Transmission over rTorrent is that it seems to be the less memory consuming one of them. Also, some people have reported that rTorrent hangs on some occasions, especially when handling big files.
Plus, transmission
has a beautiful web-based GUI available, Clutch. We'll be installing that, too. No need for separate installation anymore :)
In the MBWE wiki at Wikidot, there is a subforum dedicated to BitTorrent clients in case you need support on using some specific torrent client on your MBWE.