Serviio, MediaMonkey and FLAC

Hi, I've got MediaMonkey running on several Win7 clients. They connect to a Serviio 0.6.2 mediaserver running on Ubuntu 12.04 LTS.
The clients connect to the server without any problems and they play MP3-files without a hitch. However, it is impossible to play FLAC-files.
My whole music collection consists of FLAC files, so the problem is a real showstopper.
Behaviour: MediaMonkey shows the whole folder structure of my Music collections and all the FLAC-files. Whenever I try to play an album, the player starts on the first track, chews on it for a couple of seconds and then passes on to the next track, and so on, until it reaches the last track. It does not initiate playback for any track.
BTW: I've also got a Playstation 3 connecting to the Serviio mediaserver and that works without problems, including playback of FLAC-files.
Suggestions anyone?
The clients connect to the server without any problems and they play MP3-files without a hitch. However, it is impossible to play FLAC-files.

Behaviour: MediaMonkey shows the whole folder structure of my Music collections and all the FLAC-files. Whenever I try to play an album, the player starts on the first track, chews on it for a couple of seconds and then passes on to the next track, and so on, until it reaches the last track. It does not initiate playback for any track.

BTW: I've also got a Playstation 3 connecting to the Serviio mediaserver and that works without problems, including playback of FLAC-files.
Suggestions anyone?
