i have recently installed asset upnp on a synology nas to stream music to a streamer.
Am experiencing an awkward behaviour and am wondering if anyone has bumped into this before.

The existing AIFF files in the music folder are playing fine.
I recently purchased 2 albums in AIFF format from Qobuz and saved them in the music folder
The streamer app (Naim) i am using detects them via Asset server.
Problem is when i try to play them the file seems to be just hanging on the app and doesn't play the file.
Other AIFF files play fine.

Any clue how to get over the hurdle?
Many Thanks,