Hi Peter. I've only just noticed your reply, for some reason. Apologies.
I have downloaded and installed Asset 6, and although it appears on the NAS web interface as an app my media controller (ie NDX iPad app) cannot "see" it. Unlike the Minimserer app on the NAS, which the NDX can see and access.
When I get home tonight, I'll try the latest Beta version that you linked to.
Matt