Yamaha NP-S303 - Unable to play file

[Chasepoes]

Hello everyone,

I've been using Subsonic for a long time and have always been able to get things to work, but not this time. After extensivly searching this forum I was not able to find a solution, so help is needed and greatly appreciated.

I'm using the latest official build of Subsonic on a Windows 2008R2 server and it is running perfectly. In my house I have a Denon Ceol player which I use in the kitchen, which is playing Subsonic files using DLNA without any problem.
Recently I bought a Yamaha NP-S303 to add some much needed functionality to my main stereo-system I use in the living room. However, the Yamaha refuses to play any file stored on my Subsonic server. It is able to access the server and read the folders and files on the server. However, whenever I select a file to play the Yamaha gives me an error stating 'Unable to play file'.
Because the Denon CEOL is playing the same files, from the same server, on the same network without a glitch, I think the Yamaha player is doing something wrong. Does anybody know a way to either configure some DLNA options, or other way's to get the Yamaha to behave and play the files stored on my SubSonic server.

The player is physically able to play the files.I've tested that by putting some of the files on a USB-stick and plug that stick directly in the Yamaha player. The files played without a glitch. I suspect the DLNA implementation of DLNA in the Yamaha player is at fault, but that is just a hunch. Hoping someone here can help me out.