Also when VC sees multiple possibilities in iTunes I get a black box with 'iTunes Basic Commands' and ...
1 Play Song (Lapdance)
2 Play Song (Low)
How do I select the option verbally? Can I turn this off as I plan to run the whole system without a screen..?
I can't speak to the iTunes issue regarding the empty voxTemp playlist, but:
I believe there's a built-in command in standard VC configurations called "Option", which you should see listed in the Vox Commands group of your tree.
This allows you to verbally select any of the options by number (Option 1, Option 2, etc.).
The feature above is referred to as "Alternates". You can see some settings related to alternates in the Options > Open Options > General settings tab (a bit confusing that I'm talking about the Option command and Options in the menu, because these do not refer to the same thing, but I hope you know what I mean). If you don't want to see the OSD for alternates, you should be able to uncheck that box. (Might depend what version of VC you're using?)
That said: if you're planning on running the system without a screen, why does it matter if this OSD appears or not? If the problem is that the song isn't playing when there are possible alternates, this may mean that the setting "don't execute if there are alternate commands" is selected in your Options. If so, you can try unchecking that box.
I hope this helps.