NimbleTV add-on?

Hey guys,

I've got a NimbleTV.com subscription and would love a way to be able to watch these channels through XBMC.

Is there any add-on that will enable me to do this within XBMC?
Or additionally, does anyone know of any third party apps (that run separately to XBMC) that allow me to access this service without a web browser?
Ideally, I want to be able to control this with my XBMC remote.