Yup - it sees the NAS ok ( and the relevant shares ) but there isn't a mechanism to input username / password for the shares so that it can open them.
It does find DLNA OK but since this bundles all of the music together it sorta defeats the many hours I've spent organising folders etc by type of music, bitrate etc etc.
I also tried it using some files locally on my phone ( put a few albums of mixed type ( flac, DSD, DFF etc ) on a micro sdcard and connected my Mojo with an otg cable - works great & a nice clean interface, I like it. Unfortunately as it is at present it's less than useful in my configuration - and I'm not going to remove the passwords etc. from my NAS.
Maybe in a future update.