If you are looking for hardware for your ‘barn door’ I recommend Unique Hardware who sell Centor architectural hardware systems.  I don’t think much of their website, but contact them and you’ll find out how helpful they are.  I’ve been looking for ages for someone in NZ who can supply an exposed track – see photo above.  Below you can see where the sliding door is going, and below that the door.  Can you put all three photos together and imagine what this is going to look like?  I can – bloody amazing :-)  It’s just costing a little more than I wanted……

UPDATE:  Here’s what it looks like completed: