Album art - Streaming only or USB - SuperUniti

Dear All,

I wonder if you can help me please.

I have a SuperUniti and NAP 250.2

I am currently using a USB stick in the front to access some music files (FLAC)

I have a Netgear wireless router cabled to the SuperUniti and an iPad and iPhone with n-Stream on for controlling via WiFi. All works fine apart from: no album artwork

I have read a number of articles on here but none have answered my question/solved my issue so far...

On my USB stick I have a folder structure as follows: Artist > Album > track files (.flac)

My files were ripped from CD using Media Monkey into FLAC; images embedded.

I know that n-Stream cannot read embedded images (which is a shame by the way ) so I read that if I create a "content.jpg" or "folder.jpg" image file and save this in the Album folder it will work.

It doesn't!

I have tried clearing the app cache.

I have tried changing the pixel number on the image: started at 500x500, then 250x250

What is going on here?

Are we basically saying that via USB images don't work.
Will it work on my Netgear ReadyNas via UPnP?

Can I escalate this up to a Naim engineer?

Thanks for any help; much appreciated.

Ben