Thanks for your further comments Alec
It looks like DRM is virtually a Dead Duck now, according to an article I read this morning...........

I don't normally use MP3 files with my KN7000 - preferring to play everything as 'Live' as possible, but this particular theatrical application required a few original arrangements so I though it might be an opportunity to use the Audio Play facility, but as I said above, I won't bother again......Too much hassle

Cheers!