Hi Cliff, as I drove away I kicked myself ... we should have left the analogue audio cable in from the MacMini's headphone port to the BV7 because we will need to reconnect it later ...
There is also an issue with N Music and N Radio playing easily when the tv picture is on but not when off.
When the picture is on, the MacMini and the BV7 are in synch ... they are both using the HDMI connection for the audio.
When the picture is off, and N.MUSIC/.RADIO are selected the BV7 is looking for an audio analogue signal ... but the MacMini is still broadcasting on the HDMI.
The approach that Philippe and I are working on is to have LinkPlayer automatically switch the MacMini's audio between digital (HDMI) and analogue (the cable we tried and then removed). This will be the program-driven equivalent of what you and I did yesterday ... change the MacMini's System Preferences -- Sound from headphone to BeoVision 7 HDMI - and get analogue all you need to do is switch BeoVision HDMI to Headphones ... with the cable we removed plugged in !!!!!
Also, I transferred some of my iTunes from my iMac to the iTunes of the Mini and they came across well but when I tried with a few more, even though I placed them in the same music folder they don't show up!!
To move the music across you need to update the MacMini's library data base ... and how I did that was to do an import of the files under the iTunes File menu option of "Add to library"
I suspect you used Finder to copy the files ... we need to do both the files and the data base.
The easiest thing is delete the files you copied, and then do the "Add to library" process