Overcoming the "not an absolute path" message

[terrydactyl]

Hi everyone and Simon,
Just in the process of setting up a QNAP TS-131P NAS on my system.
When I try to set up Minim Server I get this message:
"Not an absolute path; correct highlighted value and retry".

My system:
Windows 10 laptop. Also a Samsung tablet where I want to use my Naim control app from.

The QNAP is plugged in to a network switch. Its address is \\NAS3B2251 and according to my laptop the path to the music is \\NAS3B2251\public\shared music.
I have mounted the NAS drive in Windows and called it "O".
Can anyone please tell me what the "absolute path" is in this instance?

Kind regards,

Terry