Minimserver not finding new music

[Tired of all this]

I started a while back on the long road of digitising my CDs. Since I'm not an IT techie I've had a headache ever since!
History: Recently installed Minimserver 2.0.12 on my Qnap Nas because using Linn Kazoo [app that comes with my Linn amp] without it, all tracks played in alphabetical order.
A new line appeared in the Kazoo app called 'Minimserver' and when I select albums there they all play as they should. Horray!

But... now I add new music to the Nas it does not show under 'Minimserver'
(But it does show in the usual folder so it is definitely there)

I used the Directory /share/MUSIC when setting up Minimserver and all the new music has been added to the same place - so why can't Minim server find it. Does it somehow need to reboot, reload, re-something else to find anything new?

AND.. Why can't program writers make any of this stuff simple so this it just works 1st and every time? (Probably too philosophical so answer to main question will do - Thanks)