All set up now - bunged into a project box with some appropriate holes gouged in it ....

Spent this morning pratting about with router, addresses, etc and finally got it singing. Initially tried MoOde but it wouldn't recognise my wifi dongle - or scan the USB stick ... or play any music
Reverted to Volumnio/IQ Dac image of of IQaudio website.

Playing some muzak over my system now using USB stick - sounds on a par with playing WAV files on my Toshiba BluRay thru coax out (but a lot more hassle)

TOP TIP:
If you use AIFF files and folders from iTunes you may (like me) encounter loads of hassles after updating the library ... missing files, tracks in the wrong sequence and much more besides HOWEVER the upload of the same music folders converted to WAV is infinitely better - all properly organised AND playback is also improved !!!! - win win