I appreciate your input GT and as I said above, I will experiment with WAV later. For now, I'm just trying to get my head around basic operation. A couple of things are intriguing and frustrating in equal measure.
1.I can 'see' my Zen mini from my PC and interrogate and edit the music library from PC. This is useful as I find any 'keyboard' operation far easier with a full size keyboard c.f. a tablet. However, I can find no way of controlling replay from the PC. It's not a major deal.. but it confuses me.
2. For replay, I'm using a cheap unbranded tablet which cost me about £40 a couple of years ago. As with a lot of Chinese cheapy stuff, it really is the case that the Chinese 2000 year headstart in working with paper really tells, and the box is better finished than the tablet which comes with it. However.. I digress.. The tablet runs KitKat 4.4. It works very well at controlling the music via Orange Squeeze, and I can watch the progress of rips by connecting directly to the server via 'my Innuos'. But, and annoyingly.. the tablet seems to disconnect from 'Innuos' and wi-fi, if left alone for a few seconds. It takes a few seconds then to go into 'wi-fi settings' and re-connect, which it does on command.. only to drop off again if not constantly refreshed by touching the screen. Being a self confessed IT Dummy, I'm not sure whether this is a setting or somesuch on the tablet, or a feature/setting in Innuos. The tablet does not behave like this when connected to wi fi for general browsing.
Any tips much appreciated.