I have now tried both suggestions with Control:PC and library interrogator but neither will connect to the system because the C10 is the core but keeps crashing and shutting down.
I am no wiser as to whether my albums are safe.

How long does it normally take M to reply?

Thanks

Nick.

861v8+ID41, HD621, DSP6000, DSP5500HC, DSP6000, 2x DSW's, Roon, AudioQuest Niagara 5000, IsoTek Titan, Nova, Vision, Mira.