Music files are displayed twice

I didn't find any problem like this on the forum so I am starting a new topic.
I am using Serviio 1.3.1 on Win7 with Samsung F6750 TV (latest firmware 1114).
Serviio is sharing a main music folder with some subfolders (albums) and also some content in the root folder. The issue is that on TV all files are displayed twice. And also if I want to listen some album, the songs are dubled in the playlist and are also played twice.
Any ideas on what could be wrong?
I am using Serviio 1.3.1 on Win7 with Samsung F6750 TV (latest firmware 1114).
Serviio is sharing a main music folder with some subfolders (albums) and also some content in the root folder. The issue is that on TV all files are displayed twice. And also if I want to listen some album, the songs are dubled in the playlist and are also played twice.
Any ideas on what could be wrong?