...or there is also this eccentric BB: http://www.trickstuff.de/index.php?p=d116en1

Someone else mentioned a chain tensioner; if you don't like the look of the traditional (derailleur-style) tensioners there is this one by Yess Labs: http://labs.yesspro.com/products/etr-b



FWIW I think that an Alfine-equipped LHT would make a great touring bike or a kick-butt commuter (especially the new Alfine 11-speed)!