Serviio Problems with Sony SMP N-100

Hi,
I'm using an iMac with Serviio 6.0.1 to stream to a Sony SMP N-100 media player.
I had all set up and was able to stream fotos and content from iTunes onto the SMP.
From a day to another the server is no longer access able from the media player although it is shown in the console as running o the iMac.
Even if the Sony sees the server it states that there are no playable files in the folders. Folders are shared on the Mac and in itunes.
Any idea?
Thanks in advance
I'm using an iMac with Serviio 6.0.1 to stream to a Sony SMP N-100 media player.
I had all set up and was able to stream fotos and content from iTunes onto the SMP.
From a day to another the server is no longer access able from the media player although it is shown in the console as running o the iMac.
Even if the Sony sees the server it states that there are no playable files in the folders. Folders are shared on the Mac and in itunes.
Any idea?
Thanks in advance