Problem finding entire music library

Hello there, I'm new and also a technically inept so please go easy on me.

I have had a squeeze box touch for about 3 years and its worked fine until yesterday.

I am using a qnap turbo nas drive to store my music on and from that use a qpkg to launch the server. In summary when I try to find my library when choosing from the server I go to the shared folder and then music and it only seems to find about 10% of whats in the file.

I haven't changed the permission or changed the folder in anyway. I have tried updating the NAS firmware and also the qpkg thing but with the same results, and yes I have tried turning everything off and on again.

Is there any help for this? how can I see only some of the music in the folder and not all of it? I have been through all the folders and the the missing files aren't anywhere else.

I hope I've given enough information to go on if someone could help I'd be really grateful.

Thanks and here's hoping.