Some tracks will not on my Naim Atom but will play on other devices - QNAP NAS

What short-term fix are you referring to? There is a very definitive fix under way, just not officially released to the app store by QNAP.

As it seems you cant find it in the linked thread, I linked it below:

Click on the blue thread title to go there. Please read it. If you scroll down, you can find very detailed information about how to install it all. If you run into trouble installing this please come back here with a concrete description of your problem.